For every club there's the one that got away, and for Manchester United that man is undoubtedly Paul Pogba.
The French midfielder is amongst the finest young players in Europe and will undoubtedly be key for his country at the World Cup - but it could have been so very different if he'd been handed a chance to shine at Old Trafford.
Pogba complained of a lack of opportunities afforded to him at Manchester United and eventually swapped Old Trafford for Italy and Juventus, where he has flourished.
As if his performances for the Old Lady weren't enough to make Manchester United supporters feel sick then this video of him warming up for France last night before their game against Paraguay last night will certainly do the trick.
He's been captured nonchalantly pulling of a range of impressive flicks and tricks - and trust us, he makes it look easy.
So while Tom Cleverley and Michael Carrick are plugging away in midfield for Manchester United think about how good Pogba would have been....
Check out the video above!