CENTRE-BACK: Rio Ferdinand
I played with Rio for the first two or three years of my career. I saw he come through as a young boy – he started as a No 10 and moved himself back to centre-half. He practised heading – heading maybe 50 balls after training when he was 17 to improve his game. To then see him at Manchester United as an absolute world-beater was amazing because I knew how much it meant to him. He was top class.