Koulibaly told L'Equipe: "Big clubs want to sign me and there is no sign of a renewal with Napoli.
"The negotiations for a contract extension have stalled and they never wanted to discuss with us.
"I have not talked to [Antonio Conte] but that may be soon. If nothing happens at Napoli, I will start to have contact with other clubs.
"The game In England could be suitable for me but I like Italy, I do not press for a transfer but I hope to sign a renewal with Napoli or we proceed to other solutions."