New Tottenham boss Harry Redknapp is convinced potential coaching signing Tim Sherwood can have a big impact at White Hart Lane.

Redknapp once signed Sherwood for Portsmouth from Spurs.

And he claims the Setanta TV pundit is one of the best young brains in football.

Redknapp said: "Tim's knowledge of the game is tremendous and he tells it as it is. He's terrific in the dressing room.

"He's got a big future in the game if he takes that gamble."