O'Shea played against Crewe in the last round of the Fizzy Pop Cup but has not featured in the first team since.
"It does get frustrating not playing but you have to put up with it because it's a talented squad and you have to make sure your mind is focused on the job. The manager is always watching and doesn't want players going off sulking. I think it's rare you find a player doing that at this club. You just concentrate on your own game and hope that when you do get the chance you stay in the game."
"I have had a bit of a groin problem. I am trying to get over it at the minute. I rested it for about a week and I have got through the training sessions since OK. Wednesday is for the lads who haven't been playing that much to get the match practice and it's going to be a tough game because I'm sure Crystal Palace are going to look forward to coming up to Old Trafford. We haven't played them yet in the Premiership."