Sir Alex Ferguson has confirmed that United have a full-strength squad for Sunday's trip to Arsenal's Emirates Stadium.
Wes Brown has recovered from a virus to further swell the Reds' ranks ahead of another crucial weekend in the Premiership title race.
Speaking at his weekly press conference, the United boss said that deciding which players to omit from his squad altogether was proving difficult.
"There are 21 players fit and the biggest problem is leaving players behind," he admitted.
"We could take them all to London, but we don't do that. There will be two disappointed players not travelling.
"It's a hard decision, but we keep hoping we have everyone fit. When you do, it gives you certain other problems. But it's good to be at full strength."
The Reds go into Sunday's match looking to maintain their advantage over champions Chelsea who travel to Anfield on Saturday. United will also be aiming to avenge their first defeat of the season, inflicted by Arsenal in September.
"Arsenal were the far better side last time out and deserved to win," said Sir Alex.
"In games like this, if our best players perform at their normal level then we can cause problems for any team. ThatÂ’s what good players do. Our form is excellent and hopefully we reach that level on Sunday."
Manchester United are highly likely to win tonight and may extend the lead to just 9 points. Go Man Utd go!!