Man Utd's Ferdinand keen for positive Vidic news
There are fears Vidic could be out for the season and Ferdinand said: "Vida has been fantastic for us. Fingers crossed he'll be all right but we've got players who are more than capable of stepping in.
"That has been a feature of our game all season, so to keep that going, even without one of the regular players at the back, would be a good test for us. But I'm sure we'll pass it."