Phil Neville facing lengthy lay-off
Neville was injured in Sunday's 2-1 Premier League defeat at Fulham and taken off on a stretcher in obvious pain.
"An MRI scan on Monday morning has confirmed our fears and it has revealed that Phil has damaged ligaments at the back of his knee," physiotherapist Mick Rathbone told the club's website.
"He will now rest it for 48 hours to allow the swelling to go down and he will then see a specialist in London before a decision is made on how best to manage the injury.
"It's too early to estimate length of absence but I fear he is certainly facing a lengthy lay-off."