Manchester United and Manchester City are battling for St Etienne defender Kurt Zouma.

French media sources say United, City and Juventus have all been in contact with Les Verts to register their interest in the teenager.

Zouma is regarded highly for his ability in the air and is already a first-choice at St Etienne in this his first senior campaign.

He is tied to St Etienne until 2014 and is aware of the growing number of scouts now flocking to see him in action.