Chelsea want to sign Napoli defender Kalidou Koulibaly but according to Calciomercato.it the player is not for sale.
The 24-year-old was one of the most impressive defenders in the Serie A this season and with Raul Albiol leaving the Italian club to join Valencia, the Partenopei have made it clear that the Senegalese will not be allowed to leave.
John Terry has extended his contract with the Blues but new manager Antonio Conte is still determined to add at least one more centre back during the summer transfer window.
Everton's John Stones continues to be a target although it is rumoured that the Italian wants to sign defenders only from the Italian Serie A.
