The Manchester United legend feels Redknapp is 'too matey' with his players.
But Redknapp wrote in The Sun: "It's unfair of Roy Keane to discuss my style of management.
"He doesn't know how I work, I have never managed him and he is talking from a distance.
"I'd never dream of talking about his management style. What he does is up to him and so is the way he chooses to work.
"I like Roy but what he is saying is rubbish. I don't have to prove myself to anyone, because I've been a manager for three decades."
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