The midfielder played the first half of the reserves' 0-0 draw with Arsenal at Old Trafford on Thursday night and told MUTV afterwards that, while he's itching to get involved, the performances of his colleagues in his absence have been exceptional.
Despite manager Sir Alex Ferguson's recent assertion that Fletcher will be one of his first-choices when fully fit, the Scot is refusing to take anything for granted.
"It was nice to hear that from the manager," he said on MUTV. "But it'll be hard to get back into the team as the lads have been fantastic. The lads have been different class. Everyone in the squad has played a part. We're in a great position with a month to go.
"I want to give myself a chance to give the manager another option and play some small part in the Premier League or Champions League. All I can ask for is a sub appearance or starting the odd game. I just want to be involved but it's a squad game."
"It was a bad virus, it was maybe a week originally but it just escalated and is one of those things. I lost a bit of weight and had to put that weight back on so it was a long, slow process. It was originally a couple of weeks but ended up being longer."
- Darren Fletcher, MUTV