Even Sir Alex Ferguson didn't get all his transfer business right but there's one transfer the club have done since he left that he wasn't able to get his head around.
Of course, Fergie himself had his fair share of blunder signings - Djemba Djemba, Kleberson, Bebe and Gabriel Obertan come to mind, but there have been a fair few dismal dealings since he hung up his hairdryer and called it quits.
David Moyes paying £27 million pounds for Marouane Fellaini in a deadline day deal that Ryan Giggs would then admit was a panic buy is one the most high profile, and there were plenty of questionable decisions from Louis van Gaal during his time at Old Trafford.
Advert
Image: PA
And one sale in particular stunned Ferguson.
Jonny Evans, incredibly highly rated by United's greatest ever manager, was sold to West Brom for an undisclosed fee in 2015 and Northern Ireland boss Martin O'Neill has disclosed just how perplexed Ferguson was, and detailed a conversation the two.
Advert
Image: PA
Speaking to the Belfast Telegraph, he said:
"In September after last year's Euros, there was a conference in France for the coaches and Sir Alex was there talking about it and he openly said to me that he could not believe Van Gaal had sold Jonny from United.
Advert
"Because having seen him come through, he felt Jonny would spend his whole career at United or certainly to the latter stages of his career.
"I think there were a lot of factors why he ended up at West Brom. In the previous two years he had an injury and at Manchester United they had Ferdinand and Vidic and then Jonny and there was a succession plan that didn't happen because of the change in manager.
"At that time he was on the radar of other big clubs. I know that for a fact but they possibly had reservations about him because of the injuries he had and because he maybe hadn't played as much in the previous 18 months. That was just unfortunate."
Advert
Image: PA
United fans, what do you make of the decision to get rid of Evans? Would he get anywhere near your current side?
Let us know your thoughts in the comments.
(h/t Joe.co.uk)
Featured Image Credit:Topics: Football News, Manchester United, Sir Alex Ferguson, Premier League