Manchester United's defensive woes look set to continue.
United's captain missed the recent match against Liverpool, complaining of tightness.
Sir Alex Ferguson played down the fear of serious injury and indicated the defender would return in the Premier League match against Tottenham (via The Daily Mail).
However, examinations have confirmed that the damage is more serious than first thought. The influential Serbian has already undergone surgery and faces an eight-week wait to get back on the pitch.
Ferguson will be bitterly disappointed to once again lose his top defender. The problem comes just before United are set to do battle in a number of key matches.
Vidic spent much of last year recuperating from a ruptured cruciate. He has made five appearances in all competitions this season and is likely to be replaced by Jonny Evans for the duration of his injury.
The Red Devils will miss Vidic's experience in a season that has proved difficult thus far.
An opening-day Premier League defeat to Everton signaled it could be a long year for Ferguson's side. Since then, however, United have gathered five wins from five matches, including the recent 2-1 victory over Liverpool.
Key fixtures Vidic is expected to miss
United welcome Tottenham to Old Trafford in their next Premier League outing, followed by a journey to Newcastle the week after.
United fans can expect Vidic to sit out against Cluj and Galatasaray in the Champions League. He will also miss both matches against Braga.
Who will replace him?
Rio Ferdinand and Jonny Evans will now have a greater role in United's success.
Michael Carrick was forced to play the centre-back role earlier in the season. His performances were courageous, but lacked the intensity and grit of a seasoned defender.
Ferguson's options remain limited. If Ferdinand or Evans were to sustain an injury, United would be severely short on replacements.
With key fixtures on the horizon, the Old Trafford faithful will be wishing their captain a speedy recovery.
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