Liverpool have launched a new bid for Napoli defender Kalidou Koulibaly.

ESPN says Liverpool have tabled a £40 million offer to Napoli for the centre-half.

However, like with Chelsea, Napoli have rejected the proposal.

Napoli president Aurelio de Laurentiis won't consider offers for Koulibaly less than £60 million.

Liverpool are expected to return again with an improved proposal before the end of the month.