Napoli want to make Kalidou Koulibaly the richest defensive transfer in history.

Radio Kiss Kiss says the Senegal international is a target for several Premier League clubs including Manchester United and Arsenal.

But his Serie A club - who finished second behind Juventus in Serie A this season - have issued a hands-off warning.

The club's director of sport Cristiano Giuntoli will only consider a huge offer in the range of €100m.

Should the defender be prised from Naples, the fee would represent an incredible profit on the €7.75m Napoli spent to sign him from KRC Genk four years ago.