Davinson Sanchez has joined the list of the most expensive defenders in world football after completing a club-record move to Tottenham from Ajax.
The 21-year-old is the youngest player in our top 10, eight of whom were part of deals involving Premier League clubs and four of those featuring Manchester City.
Sanchez's move ensures that five of the 10 priciest deals involving defenders in football history have all been completed in the current transfer window, as spending across Europe – and England in particular – continues to skyrocket.
Here are the 10 most expensive defenders ever, as things stand – are they worth the money?
BENJAMIN MENDY – Monaco to Manchester City, £51.75m
Pep Guardiola broke the record for a defender when he signed Mendy from Monaco on July 24 this year, the left-back having quickly himself as one of Europe's most exciting attacking full-backs in 2016-17 as his side won the Ligue 1 title and reached the Champions League semi-final.
His arrival was part of a spectacular overhaul of the City backline, which has seen them spend close to £165m on three defenders and goalkeeper Ederson.
DAVID LUIZ – Chelsea to PSG, £50m
Mendy's fee eclipses the whopping £50m Paris Saint-Germain paid to sign Brazil international Luiz from Chelsea in 2014.
Luiz won the Ligue 1 title in both of his seasons at PSG and he made it three in a row after he returned to Chelsea for £34m in a surprise move in August 2016, claiming his first Premier League winners' medal.
KYLE WALKER – Tottenham to Manchester City, £50m
When Walker joined Spurs from hometown club Sheffield United for £5m in 2009, few would have guessed he would one day become the most expensive English player ever.
The significant sum means Walker – who has never won a trophy in his career – has a massive price tag to live up to at the Etihad Stadium.
JOHN STONES – Everton to Manchester City, £47.5m
City have shown a willingness to pay massive amounts for English talent, with Stones having joined the club from Everton last year.
But the 23-year-old had a difficult first year as Guardiola's side under-performed, conceding far too many sloppy goals as they finished third in the table. Stones' potential should still see him develop into a top talent, however.
DAVINSON SANCHEZ – Ajax to Tottenham, £36.6m
Spurs waited weeks to make their first signing of the transfer window, but did so in some style, smashing their club record to bring Sanchez to north London.
The former Atletico Nacional man reportedly caught Barcelona's attention during Ajax's run to the Europa League final last year, but, after Manchester United beat them 2-0, Jose Mourinho cast doubt on the player's ability with the ball at his feet.
2018 - Davinson Sanchez was the only player in the Eredivisie last season to play more than 2000 successful passes (2018). Composure. pic.twitter.com/zpSjPPg3EH— OptaJoe (@OptaJoe) August 18, 2017
LEONARDO BONUCCI – Juventus to AC Milan, £35.2m
A row with Juve head coach Massimiliano Allegri saw Bonucci allowed to join Serie A rivals AC Milan, who have been splashing the cash in a bid to return to the Champions League.
Bonucci has won six Serie A titles at Juventus, but he twice lost in the Champions League final. Signing the Italy international – a reported target for Chelsea – constituted a massive coup for Milan.
SHKODRAN MUSTAFI – Valencia to Arsenal, £35m
Arsenal are not normally known for their big spending, with Arsene Wenger one of world football's more parsimonious managers, but they forked out £35m to sign Mustafi from Valencia in August 2016.
The Germany international had a solid first campaign at the Emirates Stadium, but the Gunners missed out on Champions League qualification for the first time since 1997.
ANTONIO RUDIGER – Roma to Chelsea, £34m
With club icon John Terry having left Stamford Bridge, Chelsea were in need of a new defensive lynchpin and they turned to Mustafi's international colleague Rudiger, who joined from Roma.
The 24-year arrived in London fresh from Germany's success at the Confederations Cup.
THIAGO SILVA – Milan to PSG, £33m
PSG's second entry is their club captain, Thiago Silva, with the Brazilian having been a major success since joining in 2012.
Although PSG were unceremoniously overhauled by Monaco to end their dominance of Ligue 1 last season, the 32-year-old has won four league titles and three Coupes de France in Paris.
ELIAQUIM MANGALA – Porto to Manchester City, £32m
A huge flop, Mangala's fee of £32m to join City from Porto looked overpriced enough after he was allowed to join Valencia on loan. But subsequent leaked documents suggested the total cost of Mangala's move rose to £42m as City had to buy out third party owners.
Mangala is expected to be allowed to leave by Pep Guardiola, having made 48 Premier League appearances for the club.
Si quieres ganar mi camiseta firmada, mira mi página de Facebook https://www.facebook.com/eliaquim.mangala.officiel Si tu veux gagner mon maillot dédicacé, regarde ma page facebook https://www.facebook.com/eliaquim.mangala.officiel If you want to win my signed shirt, take a look at my facebook page https://www.facebook.com/eliaquim.mangala.officiel
(*Prices are as reported at the time of transfers being completed.)
|How will Alexis Sanchez compare to Manchester United´s post-Ferguson big deals?|
|Gunning for a move - Sanchez the latest big name to quit underachieving Arsenal|
|Stoger wants speedy Aubameyang resolution as Arsenal circle|
|WATCH: See how Manchester United welcomed Sanchez|
|WATCH: Treatment-room footage of Ronaldo head wound released|
|Always my intention to stay - De Bruyne thrilled by new City deal|
|Inter snap up Rafinha on loan from Barcelona|
|Sanchez on Man Utd move: I am joining the biggest club in the world|
|The big debate: Who wins from the Sanchez-Mkhitaryan deal?|
|Mkhitaryan wants to ´create history´ after ´dream´ Arsenal move|
|Do Arsenal or Man Utd get the better deal? Sanchez v Mkhitaryan in Opta numbers|
|Manchester City reward De Bruyne with new five-year deal|
|Arsenal and Man Utd agree Sanchez-Mkhitaryan swap|
|Spurs striker Kane voted England Men´s Player of the Year|
|Aubameyang behaviour ´unreal´, says Frankfurt boss Kovac|
|Van Persie: Feyenoord return a choice for continuity|
|Hamburg hire Hollerbach to replace Gisdol|
|New Bordeaux coach Poyet offered Malcom assurances|
|Rakip excited to link up with ´legend´ Hodgson at Crystal Palace|
|O´Neill rejects Scotland to stay on as Northern Ireland boss|
|Simeone: Atleti must seize early control against Sevilla|
|Vermaelen sidelined for two weeks|
|Silva ranks Man City star De Bruyne with Ronaldo among world´s best|
|Former England captain Armfield dies aged 82|
|Robinho set to join Sivasspor|
|Van Persie´s Feyenoord return ´beautiful and special´|
|Kepa pens new Athletic Bilbao deal amid Madrid speculation|
|PSG star Mbappe holds no grudge against Lopes after Lyon collision|
|Messi makes football better, says beaten Real Betis goalkeeper|
|Goretzka accepts vitriol from Schalke fans after Bayern move|
|What am I getting for my birthday? Arsenal-bound Mkhitaryan celebrates with Pogba|
|Ince: Sanchez snubbed City because United are miles bigger|
|Bale: Madrid will get back to their best|
|Valverde: Messi is the best player there is and there ever will be|
|Emery: Lyon loss unfair on PSG|
|Spalletti defends struggling Inter amid six-game winless run|
|Fekir: Lyon still targeting Champions League despite PSG win|
|Wenger suggests Sanchez is joining Manchester United for money|
|Hazard: Chelsea don´t need to buy a striker|
|Rakitic hails ´patient´ Barcelona after Real Betis rout|
|Neymar? I´d rather watch the golf, says Bale|
|Mbappe injury from goalkeeper collision ´nothing serious´|
|Don´t look back - Guardiola gives Manchester City title warning|
|Vermaelen to face tests on new hamstring injury|
|Conte wants ´point of reference´ striker as Barnes joins surprising Chelsea links|
|Sane the perfect tonic to Sanchez blues for City and Guardiola|
|Suarez scores 100th LaLiga goal as Messi reaches new milestones|
|Lyon 2 Paris Saint-Germain 1: 10-man leaders downed by twin wondergoals|
|Inter 1 Roma 1: Vecino snatches point on possible Dzeko farewell|
|Real Betis 0 Barcelona 5: Messi, Suarez rampant as leaders go 11 points clear|
|PSG star Mbappe injured in goalkeeper collision|
|Monchi: Roma will replace Dzeko|
|Kessie a far better player than I was, claims AC Milan coach Gattuso|
|Neymar to Real Madrid stories manufactured by Spanish press, claims Marquinhos|
|Cagliari 1 AC Milan 2: Kessie at the double in comeback win|
|Watford hire Javi Gracia as Marco Silva successor|
|I am happy with our squad - Pochettino denies Malcom rumours|
|Not much changed - Zidane boosted by clinical Madrid|
|No chance of January move, says Vidal|
|Selfie or stitches? Ronaldo bloodied after Madrid brace|
|Heynckes hails Bayern win: This is what sets us apart|
|Southampton 1 Tottenham 1: Kane earns visitors a point|
|Silva assured of chances at AC Milan after latest first-team snub|
|Goretzka´s Schalke return marred by abuse|
|Real Madrid 7 Deportivo La Coruna 1: Seven-up for Zidane´s men as Bale shines|
|Muller brings up 100 Bundesliga goals in Bayern win|
|Bayern Munich 4 Werder Bremen 2: Lewandowski & Muller at the double to spare champions´ blushes|
|Do Arsenal or Man Utd get the better deal? Sanchez v Mkhitaryan in Opta numbers|
|Pele ´fine´ and in ´no pain´ after reported health concerns|
|No mercenary? Sanchez endorses article defending imminent Man Utd move|
|Allegri expects Buffon to be ´fully recovered´ within a week|
|Atletico Madrid confirm Costa hamstring injury|
|Atalanta 0 Napoli 1: Mertens ends drought to keep visitors top|
|Alexis Sanchez boards plane ahead of reported Man United medical|
|Hamburg dismiss Gisdol after fourth loss in a row|
|Melbourne City 5 Adelaide United 0: Budzinksi & Vidosic braces inspire emphatic win|
|Marco Silva sacked by Watford following ´significant deterioration´|
|Deschamps knows my thoughts - Lucas Hernandez hints at France decision|
|Klopp: Liverpool wouldn´t sell to rivals during season|
|Giggs keen to help Bale overcome injury woes|
|Klopp in no rush to replace Coutinho|
|Malcom dreams of Premier League but remains unsure of future|
|Guardiola sets target of 10 wins to guarantee title|
|Championship Review: Millwall break Leeds hearts in seven-goal stunner as Wolves lose|
|Messi and Pique welcome Coutinho to Barcelona training for first time|
|Thauvin ´very happy´ at Marseille|
|Guardiola salutes ´outstanding´ Manchester City|
|Watford still battling relegation from the top half, insists Silva|
|Rondon ´devastated´ after Everton´s McCarthy suffers horror injury|
|Aguero´s perfect hat-trick is Argentine´s 11th for Manchester City|
|Moyes impressed with Hammers display despite being held by Bournemouth|
|Dyche annoyed with Burnley´s ´big six´ results|
|Manchester City 3 Newcastle United 1: Aguero hat-trick sees pacesetters bounce back|
|Everton fans´ frustration understandable, says Allardyce|
|Wenger responds to Dortmund criticism over Aubameyang affair|
|Bordeaux appoint Poyet as new boss|
|Mourinho frustrated at United failure to ´kill´ Burnley|
|Simeone reveals Costa knock as Atletico bemoan dropped points|
|Lambert upbeat over Stoke´s quality after debut victory|
|Nothing happening with Aubameyang - Wenger|
|Mourinho, Wenger expect imminent Sanchez deal|
|Everton confirm McCarthy double leg break|
|Valverde talks of ´respect´ for Atletico as Griezmann saga turns again|
|Rafinha misses Barca training with Inter closing in|
|Neymar misses Lyon clash with thigh injury|
|Atletico Madrid 1 Girona 1: Griezmann substitution costs Simeone|
|Everton 1 West Brom 1: McCarthy horror injury overshadows cagey draw|
|Leicester City 2 Watford 0: Vardy & Mahrez decisive as Puel´s men go seventh|
|West Ham 1 Bournemouth 1: Hernandez proves his worth to Hammers|
|Burnley 0 Manchester United 1: Martial keeps up winning run|
|Arsenal 4 Crystal Palace 1: Early blitz means Sanchez is hardly missed|
|Stoke City 2 Huddersfield Town 0: Lambert makes winning start as Potters inch out of bottom three|
|Crisis, what crisis? Conte lambasts Chelsea critics|
|A goal, two assists and an injury - Monreal the Sanchez replacement at Arsenal?|
|Monchi has no interest in weakening Roma squad amid Dzeko reports|
|Hazard delights in Willian and Batshuayi link-up|
|No January exit for AC Milan´s Silva, assures Gattuso|
|Spalletti: Roma game will not decide Inter´s fate|
|Brighton and Hove Albion 0 Chelsea 4: Hazard dazzles as Conte´s men get back on track|
|Dortmund confirm Arsenal bid for Aubameyang|
|United target Sanchez remains absent for Arsenal vs Palace|
|Zidane quiet on ´great´ Neymar with BBC ready to return|
|Hazard scores 100th league goal as Chelsea find shooting boots|
|Zidane: I will never throw in the towel at Real Madrid|
|Willian marks 50th consecutive Premier League outing with a goal|
|Noble shares West Ham bonuses with club staff|
|Barcelona refute claims of Griezmann agreement|
|Courtois out for Chelsea as Caballero steps in to face Brighton|
|Real Madrid´s Vallejo suffers hamstring injury|
|A-League Review: Bobo hauls in Mariners as Jets are grounded|
|Captain Jack? Wenger talks up Wilshere leadership qualities|
|I prefer Fekir to Neymar - Lyon president Aulas fires another pre-match barb at PSG|
|Dortmund boss Stoger leaves door open for Aubameyang return amid Arsenal links|
|Neymar can play with Ronaldo at Real Madrid – Mijatovic|
|Dyche compares Sanchez-Man United move to Harry Potter|
|Schurrle annoyed at more dropped Dortmund points|
|Carrick expected to become Man Utd coach, reveals Mourinho|