On Sunday Manchester United manager Sir Alex Ferguson revealed that he now regrets selling Stoke City captain Ryan Shawcross to the Potters. This is not the first time the Red Devils boss has made a transfer mishap in defence as he has also revealed in the past to be remorseful about Gerard Pique’s departure to Barcelona.

However, transfer regrets are not just limited to players who have gone on to do well for their following clubs. Arguably the biggest regrets come from clubs who have splashed the cash on expensive flops.

So here is a list of the 15 greatest Premier League transfer regrets. Some transfers have made managers cringe as to how disgracefully poor they have turned down, others have made managers gaze into the distance pondering the question ‘if only I’d kept that one?’

Click on Gerald Pique to unveil the 15 great regrets