Darren Bent claims he is 'still traumatised' by Roy Keane's two-hour rant during his time as Aston Villa's assistant manager.
The Irishman ripped into the players following a 2-0 defeat to QPR at Loftus Road in October 2014.
Manchester United legend Keane, who was part of Paul Lambert's backroom staff, laid into the squad in the dressing room afterwards.
Bent told talkSPORT : "He was really, really scary. He would just lose it.
"And I can understand why, because when you've been a top player like Roy Keane was, one of the very best, in his head he can't understand why us players at Aston Villa made certain mistakes - it just didn't compute.
"Like: 'How can you not pass from there to there?' He just can't see it.
"I remember this one particular game we played against QPR, we lost down there and he had us in the changing room.
"Paul Lambert just stepped aside and Roy started talking.
"And honestly, I promise you, it was a night game and all the lights in the building were off, all the fans who used to wait outside had gone, because we were in there for two hours - he just went off.
"He was talking about the Lucozade players drink, players getting too many massages, people doing yoga.
"Ron Vlaar had an injury, I think it was shin splints and Roy was like: 'How can a player be out for that long with shin splints?'
"He was going around the room picking faults. No one really wanted to make eye contact with him because the moment that happened he would go for you as well.
"Everyone just sat there for two hours… I'm still traumatised by what happened that night. Honestly, he was crazy."
