The England under-21 star had a promising start to the season at Old Trafford, starting the majority of the Premier League champions’ games until being injured against Bolton in September.
Despite recovering from that knock, he picked up a new ailment in the 1-0 win over Everton at the weekend.
His Scottish coach has indicated that the player will be given the required time to fully recover, and will not play against Otelul Galati in the Champions League on Wednesday.
“Tom won’t play,” the United manager told reporters ahead of the European fixture.
“It is not serious. He got a little tweak on Saturday but we have to take the long view.
“We need to make sure he will be available for a long period, rather than play him again and the decision comes back to haunt us, so I think he will miss the Saturday game (against Sunderland) also,” he concluded.
The United manager also called the game against the Romanian minnows a ‘must win game’, as the English side do not want to lose ground on current group leaders Benfica.
By Gareth McKnight