Liverpool boss Jurgen Klopp has spoken to Napoli defender Kalidou Koulibaly about the prospect of partnering Virgil van Dijk at the heart of his defence, according to a report.

Koulibaly has long been linked with a move to the Premier League, having become one of the best centre-backs in Europe and the Champions League in recent seasons.

Recent reports have suggested that Liverpool and Manchester United will go head-to-head for the Senegal international and, according to Le10 Sport, that remains the case.

However, the source adds that Liverpool have taken a step forward in their efforts to sign Koulibaly after Klopp’s teasing phone call about the prospect of moving to Anfield, a “seductive operation” that will inevitably strengthen the Reds.