Manchester United have allegedly agreed a deal with Napoli for defender Kalidou Koulibaly.

After impressing during his time in Naples, Koulibaly has been heavily linked with a move to Old Trafford for a number of transfer windows.

Despite previously maintaining a strong stance regarding his future, Napoli are said to be open to offers for the centre-back during 2020.

According to Italian journalist Fabio Santini, United have informed the Italian giants that they are willing to pay £64m for the 28-year-old.

Speaking to Il Processo, Santini said: "Napoli will sell Kalidou Koulibaly to Manchester United for a figure of around €70m-75m. It seems all done.

"Naturally, such a deal will be closed only in June and certainly not in January in the winter transfer window."

Koulibaly cost Napoli a fee of £8m when leaving Genk before the beginning of the 2014-15 campaign.