Ferdinand discussed the United legend when selecting his all star XI.
He told Sky Sports: "I remember my first training session: I got the ball from the keeper, I passed it to Gary Neville at right back and Keane just exploded, saying: 'You passed it sideways, that's the easy pass! You're not at Leeds or West Ham now!'
"At the time I thought: 'What's he talking about?' Then when I got home, I sat and thought about it and thought: 'Yeah, you've got to try and affect the game'. For that he has to get in my team."