LONDON (AFP) - Avram Grant reiterated his desire to see Frank Lampard pledge his future to Chelsea after he engineered a 3-1 FA Cup triumph over Hudersfield.

This was just Lampard's second game since a thigh injury ruled him out over the crammed Christmas schedule but he showed no ill effects with a power-house performance on Saturday.

Two goals - the first, his 100th for the club, swept in from 10 yards after Scott Sinclair had crossed from the right and the second bundled in from close range - gave the Blues a stranglehold on the fifth round tie and his exceptional pass set up Salomon Kalou for the killer third with 20 minutes remaining.

It was a dynamic display from Lampard, who has found himself the subject of unusually negative scrutiny for long spells this season.

The midfielder was singled out for criticism by England supporters for his performances during the failed Euro 2008 qualifying campaign and Michael Ballack's vibrant displays in Lampard's absence had even led to questions over his first-team place at Stamford Bridge.

It might take more than a dominant display against League One opposition to totally silence the doubters but Grant, for one, never questioned Lampard's value and he is desperate to keep him at the club beyond the end of his current contract, which expires in the summer of 2009.

"I don't think many players could have scored this number of goals," he said. "But it's also important to give assists, to help the defence and he is a very good player. He probably deserved more goals today.

"I am not a man to change my mind. I said before that I want him to stay, he said that he wants to stay and we will talk in the summer. I want him at the club and I think he will stay here - I cannot see any other outcome."

After consecutive Premier League draws, this eventually comfortable win handed Chelsea a timely lift ahead of a crucial fortnight, with a Champions League meeting with Olympiakos looming large on Tuesday and a League Cup final date with local rivals Tottenham following five days later.

Grant might even have been pleased to see his team stretched by a disciplined, hard-working Huddersfield, who showed no sign of being over-awed on this illustrious stage.

They even mustered an equaliser to Lampard's opening goal, Michael Collins collecting James Berrett's chipped pass and firing past Carlo Cudicini at his near post.

But that was a minor irritation for Chelsea, who can now look forward with relish to the trip to Greece, when Didier Drogba - who missed this game with a slight knee injury - should be available to play.

"December and January were always very important because we missed so many players during that time," Grant added. "We got through that and stayed in every competition but now we confront another important week.

"I know the style of the team I want to play. In modern football, the tactics are very important but it depends on the shape of the players. We have to keep working on the style of the team and the players who are best for the shape of the team will play."

For Huddersfield manager Andy Ritchie, there was nothing but pride at his side's perky performance, which belied their lowly standing in League One.

"The goal gave us a real lift and we actually looked dangerous at the start of the second half," he said. "We annoyed them a bit and the lads didn't disgrace themselves. One or two didn't look out of place in these surroundings.

"It was always going to be hard for us to maintain the effort against a quality side. Lampard was top notch and his drive, vision and speed were too much for us at times. He was super."