Napoli manager Carlo Ancelotti has insisted that the Italian club will not be forced into selling Manchester United target Kalidou Koulibaly.

The Red Devils are in the market for a new centre-back and Koulibaly is rumoured to be their number-one target.

United reportedly believed that they could land the 27-year-old with a bid north of £100m, but Ancelotti has warned the Premier League club that they will have to look elsewhere.

"Napoli will not be forced to sell. Koulibaly will not leave here," he is quoted as saying by the Daily Mail.

Real Madrid, Barcelona and Chelsea are also believed to have made enquiries about the Senegal international.

Koulibaly has spent five seasons in Napoli's first team, making close to 200 appearances in all competitions.