In the past, the thought of Manchester United selling Nemanja Vidic would of been seen as catastrophic. But now, the potential loss of Vidic in the summer doesn't seem quite so bad.

The Serbian defender is about to enter the final year of his contract and has had a torrid time with injuries in the last few seasons.

It started in the Champions League against Basel in December 2011. Vidic badly twisted his knee in a collision with striker Marco Streller. The collision saw Vidic damage his medial and lateral ligaments and rupture his anterior cruciate ligament. Vidic would miss the rest of the season.

His return to Manchester United's starting line up didn't last long as he was ruled out for ten weeks with another knee injury.

Since Vidic's return from injury, he has struggled to play twice a week and has had to be used wisely by Sir Alex Ferguson.

The commanding defender has helped tighten United's defence since his return from injury, however, and he has been a key figure alongside the rejuvenated Rio Ferdinand in a back four that has not conceded a Premier League goal since the 30th of January.

But with Vidic's inability to play twice in one week, there have been signs that there is life after the Serbian.

In Manchester United's 1-1 draw away to Real Madrid in the Champions League, the defensive partnership of Rio Ferdinand and Jonny Evans looked solid.

Ferdinand has been in great form all season and Jonny Evans' performances are showing he is developing into a top class centre half.

Not only that, but down the pecking order is Chris Smalling and the versatile Phil Jones too. Smalling has tremendous ability - he has a great understanding of the game and with more experience, he will replace Ferdinand.

With the likes of AC Milan and Anzhi Makhachkala interested in Vidic, United could look to sell.

If Vidic goes, then a replacement will be needed. There has been reported interest in Benfica's Ezequiel Garay. The Argentinian is seen as an ideal replacement for Vidic.

With Vidic likely to experience more niggling injuries, common after suffering a serious knee injury, any offer United should receive, should be seriously looked at for the good of the club.

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