Napoli defender Kalidou Koulibaly has cast doubt on his future in Naples.

The Manchester United target refused to commit his future to Napoli with his latest comments.

The centre-back, 27, has been linked with a move to Old Trafford in recent transfer windows.

Koulibaly did not put Napoli supporters' fears at ease when quizzed on a potential transfer.

He said: "The future? I am a Napoli player and I will give one hundred percent to win something with this shirt.

"The market is full of talk. I prefer facts, which then help us win and become great together."