Redknapp said: "Michael is a terrific craftsman, a top player and a great lad. It's fantastic to see him develop as he has. He's a superb footballer."
Redknapp is proud that four of his West Ham youngsters figured in the Champions League Final last May.
"He's different," said Redknapp. "Obviously, it depends how you play. You could see him sitting in central midfield if you played with three. Lamps and Steven Gerrard would give you the energy going forward, he'd be the quarterback if you like."