French side Olympique Marseille have confirmed Chelsea have made an approach for defender Cesar Azpilicueta.
With the start of the Premier League season looming large on the horizon, clubs are looking to finalise their squads. Chelsea have been active players in the transfer market already, bringing in Eden Hazard, Marko Marin and Oscar.
Blues boss Roberto Di Matteo may not be done though, with it believed that he wants to add a striker and defender - particularly a right-back following the departure of Jose Bosingwa.
He has held a long-standing interest in Azpilicueta and Marseille have confirmed the Blues have stepped up their interest in the Spanish right-back.
Marseille president Vincent Labrune revealed: "Chelsea have made a serious approach for Cesar. I have spoken to Chelsea's sporting director and they are easy to deal with. We have told them the price and they will come back and agree it or not.
"We would much prefer the player to sign a new contract and extend his stay with us, but he wants to go to Chelsea and it's a good club so we cannot stand in his way," Labrune told ESPN.