Chelsea v Man Utd

Manchester United boss Sir Alex Ferguson is unsure who should replace suspended centre-back Nemanja Vidic.

Ferguson could shift Wes Brown from right-back and replace him with the fit-again Gary Neville.

But Jonny Evans, 20, is also in the Scot's thinking after he played very well against Villarreal on Wednesday.

"I need to work out whether I go with Evans' ability but lack of experience or whether I opt for Wes' experience and Gary at full-back," said Ferguson.

Neville played just once for United last season - as a substitute in the 1-0 Champions League quarter-final second-leg win over Roma - due to an ankle injury.

"Gary was only playing his second competitive match on Wednesday but he did very well," added Ferguson.

"That will bring him on if I decide to play him on Sunday but Evans was excellent as well."

"Jonny was the big plus. For a young man of 20, he shows great maturity in his game.

"He reads the game well, which is a fantastic asset to have at such a young age.

"He is commanding in the air and a good user of the ball and that gives me confidence that he could step right into the first team with no worries."

While Evans impressed, there were signs of rustiness in Neville's game, particularly in his crossing, but it was his first competitive start since breaking his ankle against Bolton in March 2007.

"I just need games," said the 33-year-old defender. "Having been out for so long I need a run in the side.

"But it is difficult to get that at the moment because Wes Brown has performed so well and deserves to play.

"It is just a case of remaining patient, keeping fit and training well every day.

"I have made steady progress and when you look at the programme of matches we have coming up I am sure there will be enough games for everyone."

Ferguson also has a concern over striker Dimitar Berbatov, who suffered a knee injury in the defeat at Liverpool last weekend