Roy Keane was once banned from Manchester United's Christmas party by Sir Alex Ferguson after he had a row with a barman.
Keane infamously fell out with legendary Red Devils coach Ferguson during his time at Old Trafford, the Daily Star reports.
The legendary Ireland midfielder played for the Red Devils for 12 years during Ferguson's tenure, winning seven Premier League titles.
Keane was one of United's most reliable players during his time at the club, and was a constant fixture in the side.
However, things between them weren't always so rosy, as the two once fell out over an incident involving a barman.
Keane decided to go to the reserve team's Christmas party in 1997 before the senior team's, but got into an incident with a barman at the prior function.

And due to that altercation, he was banned by Ferguson from attending the senior side's event.
The manager went a step further, however, by berating Keane in front of his team-mates the next day.
Ferguson then warned that any player found drinking with Keane would be fined two week's wages.
Keane's exit from United sent shockwaves through football, and the player recently admitted he would never forgive the manager, and claimed he kept his family too close to the club.
“I wouldn’t forgive Ferguson,” Keane told OffTheBall.com. “The media spin, how I apparently upset everybody, it was all nonsense.
“Ferguson came out afterwards and said he always did what was best by Manchester United. Nonsense.
“People said [Ferguson] always had the best interests of Manchester United at heart.
"Darren Ferguson [his son] won a medal. He was very lucky.
“[Alex Ferguson’s] brother was the chief scout for Manchester United for a long time. I’m surprised his wife wasn’t involved in the staff somewhere.”