Rio Ferdinand has recalled how Roy Keane once punched Chris Eagles during Manchester United training.
Eagles, a midfielder who was at Old Trafford between 2000 and 2008, raised the ire of Keane who was training with the reserves.
"I remember when Roy Keane punched up Chris Eagles one time," Ferdinand told Vibe With Five.
"He (Eagles) was only [a] young kid, (taking) liberties - out of order. It was good for him, Eagles.
"Roy must have been coming back from an injury, or he didn’t play, and he was playing with the reserves. The youngsters that were in there like Eagles and Lee Martin were like rats, getting in close and trying to tackle.
"He went in late on Roy once or twice and Roy said to him, ‘Listen, slow down’. The ball comes in again, Eagles was trying to impress, trying to leave him mark and left a little bit on Roy again and pulled his jersey.
"Roy just turned round and went bang in the jaw. A quick short jab and I just stood there and went, ‘Roy, what’s wrong with you?’.
"And I went inside and said, ‘Roy, why are you doing that for? He’s a young kid man.’ He said 'I warned him: What are you grabbing my shirt for?'
"It was mad. The thing at United, it could just switch like that in training. All training grounds are the same, there's a lot of testosterone flying about."
Ferdinand also said that Keane was one of the best at United during rondo training exercises.
"I'll who you wouldn't realise who was unbelievable in the box: Roy Keane," said Ferdinand.
"Unbelievable. He always argued that he wouldn't have to go in."
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