Lyon president Jean-Michel Aulas feels Marseille are favourites for their Ligue 1 clash at the Stade Velodrome on Sunday.
In a battle between France's two remaining Champions League representatives, both teams need three points with Lyon in fourth place - eight points behind leaders PSG - and Marseille a point further back in fifth.
Despite being ahead of Marseille in the league, Aulas said Didier Deschamps' men are favourites for the match.
"It's a good test against a good Marseille team," Aulas told RMC Sport.
"This is a match more important for OM than for Lyon because they play at home and in a context where Lyon won the reverse fixture (2-0 in September)."
"Marseille are heavily favoured, but this game can only encourage us to dream and hope."
The winner of Sunday's clash could move up to third in Ligue 1 should Lille be beaten at Sochaux.