Manchester United goalkeeper Ben Foster needs surgery on a cruciate knee ligament injury and faces a lengthy spell on the sidelines.
Foster was outstanding last season for Watford
The 24-year-old was troubled by the injury to his right knee last season, which he spent on loan at Watford.
The problem was then jointly assessed by United and England's medical staff when he reported for international duty at the end of May.
He is expected to undergo surgery in the next two or three weeks.
United's medical staff have not put a timescale on Foster's return to action.
The news is a huge blow to Foster's hopes of challenging Edwin Van der Sar to become the first-choice keeper at Old Trafford next season because he has been ruled out for the start of the campaign at least.