Chelsea boss Antonio Conte has been warned he must cough up a huge fee to land Napoli defender Kalidou Koulibaly.

Napoli president Aurelio de Laurentiis has admitted he’s battled to keep the stopper away from Chelsea‘s clutches over the past 18 months. says Napoli have now put a £70m price-tag on Koulibaly.

The Blues have been linked with a move for the defender since the summer of 2016 but have so far failed to sign him.

And Conte will have to pay a world-record fee for a defender if he tries to prise him away from Italy in January or the end of the season.