As he completed 25 years in charge of Man United today, Sir Alex in the bigger picture has always looked an epitome of perfection, a Midas of sorts. To the common man, most of his buys were intelligent and always paid dividends but even the greatest make mistakes. So on this day, we take a quick look at the 10 worst signings of the Fergie era (in no particular order)

10.

With Edwin Van Der Sar retiring after Saturdays Champions League final when Man Utd face Barcelona at Wembley (what a way to bow out of the game!), United will need to replace the reliable Dutch stopper and it seems to be that they have found a near identical, if what comparatively unexperienced keeper in David De Gea.

With Edwin Van Der Sar retiring after Saturdays Champions League final when Man Utd face Barcelona at Wembley (what a way to bow out of the game!), United will need to replace the reliable Dutch stopper and it seems to be that they have found a near identical, if what comparatively unexperienced keeper in David De Gea.

With the news that Edwin Van Der Sar will retire at the end of the season the task is on for Man United find a replacement for the 40-year-old Dutchman.
The former Ajax stopper has been a cornerstone of United's success in recent years, helping them win three Premier League titles and the 2008 Champions League since joining from Fulham in 2005.