Paul Scholes has been ruled out for the rest of the season after doctors confirmed he was suffering a 'medical condition' in his right eye.
Alex Ferguson confirmed last week Scholes was being sent for a second opinion on an injury originally picked up during the Premiership draw with Birmingham in December.
The former England star left St Andrews suffering from blurred vision and although it was initially suggested the problem would clear up inside a couple of weeks, the 31-year-old has yet to recover.
"Paul Scholes has a medical condition affecting the vision in his right eye," said a United statement. "It is not a football-related injury.
"This has been confirmed by a number of specialists who have all agreed that he needs to rest for a period of three months. Obviously, it is a disappointment for Paul and Manchester United that he will miss the rest of the season.
"We look forward to having him back for pre-season training."