David Moyes feels Jonny Evans and Chris Smalling are on their way back into contention for a first-team place.
The two defenders have been sidelined through injury but have returned to training and could feature in Saturday's Barclays Premier League clash at Newcastle United. The trip to Tyneside comes ahead of the return leg with Bayern Munich in the Champions League on Wednesday and there are likely to be changes to the side.
"We have got Jonny Evans and Chris Smalling back in training," stated the manager at Friday's pre-match press conference. "That helps us.
"Ryan Giggs picked up a wee bit of an injury in the [Bayern] game and we are not quite so worried about Alex Büttner. He is not as bad as when he first came off. We have got Jonny and Chris on the way back, which is important for us because we have missed them through what has arguably been one of the most difficult times of the season for us. We could have done with their youth and enthusiasm."
Moyes stressed how important it is to avenge the home defeat to Newcastle earlier in the season and emerge victorious at St James' Park, even though the European tie at the Allianz Arena is vital in terms of the overall campaign.
"The only thing we are thinking about is the Newcastle game," he explained. "The focus is all on Newcastle. We have to go up there and put on a good performance and get three points, trying to build a little bit of momentum towards the end of the season. We will go there and try to do that.