Agents are scrambling to make contact with Barcelona ahead of the winter market.

With Barca concerned about the fitness of Samuel Umtiti and Thomas Vermaelen, a move for a new centre-half is now being discussed.

Mundo Deportivo says agents have already offered at least three defenders to Barca in recent days.

Representatives of Diego Llorente (Real Sociedad), Jorge Mere (Cologne) and Andreas Christensen (Chelsea) have all made contact to offer their clients.

For the moment, however, Barca are keeping their powder dry as they wait to see if Umtiti can recover on schedule.