Abuja - Roy Keane believes that Sir Alex Ferguson should not have used his autobiography to criticise the players who brought him so much success.
Keane and David Beckham were the subject of much discussion in the book which Ferguson released last year, much to the Irishman's displeasure.
"I felt it was a bit harsh to criticise me or other players," Keane, who is promoting his own autobiography, told Football Focus.
"We did OK for the club, had a bit of success, won a few trophies, and here is the manager criticising us all.
"A manager who has made millions of pounds out of us, got statues and stands named after him, and he thinks he can criticise us without anybody saying anything to him because he thinks he's got all this power.
"I thought, 'No, why should we sit back and listen to this nonsense?'"
Keane is currently the assistant manager of both Aston Villa and the Republic of Ireland, and is open to making a return to the managerial ranks. However, he insists he is not sitting and waiting for an opportunity to present itself.
"I'm not waiting for a manager to lose his job - I'm not that type of personality," he said.
"I hope managers do well. But obviously the game doesn't work like that - managers will lose their jobs.
"But I'm not sitting around waiting for the phone to ring, I have to say."