Southampton are chasing Napoli defender Kalidou Koulibaly.

The Daily Mail says Southampton and Napoli are holding further talks over an £8.5million deal for Koulibaly.

Southampton have made enquiries for the 24-year-old who can play at centre-back and centre midfield.

They have made an offer for Celtic defender Virgil van Dijk but Ronald Koeman wants a deal done quickly following Saturday's defeat to Everton.