Sir Alex Ferguson has confirmed Tom Cleverley is likely to miss Manchester United's next two games due to an ankle injury.
Cleverley initially damaged ankle ligaments against Bolton Wanderers in early September and the midfielder made his comeback in last week's Carling Cup win at Aldershot Town.
The England hopeful started Saturday's Premier League victory at Everton, but was forced off at Goodison Park early in the second half.
He sat out training on Tuesday morning and has been ruled out of United's UEFA Champions League tie with Otelul Galati on Wednesday evening.
Ferguson is keen not to take any risks with the 22-year-old and is also likely to leave Cleverley out of his plans for Saturday's game against Sunderland.
"Tom won't play tomorrow," said the United manager.
"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 also."