Sir Alex Ferguson stopped his Manchester United players swapping shirts with their Leeds counterparts after an FA Cup shock.
Leeds, who were in League One at the time, stunned United at Old Trafford in the third round in 2010.
Jermaine Beckford scored the only goal of the game as Leeds became the first lower league side to ever knock Ferguson's United out of the FA Cup.
The Scot was understandably furious with the likes of Wayne Rooney, Dimitar Berbatov and Gary Neville all in the United side.
And he ensured his players knew of his anger at the final whistle.
Beckford opened up on his reaction, telling the Mail : "After the game, a couple of the boys had family who were Manchester United fans.
"They tried to get a couple of shirts from their players and Alex Ferguson said, “Absolutely not, under no circumstances are you giving any of them your shirts”.’
The former Everton striker, who has now retired, admits he regularly bumps into United legend Ryan Giggs, who is still struggling to come to terms with the defeat.
He adds: "Ryan was having a business meeting the other week and we walked past and he went, “I still can’t believe it”."
Both Leeds and Manchester United are in FA Cup action this weekend with the Championship high-flyers facing a trip to Arsenal on Monday.
United have a tricky trip to Wolves on Saturday evening, having been dumped out by the same opposition last term.
