Napoli are hoping to sign André-Frank Zambo Anguissa on a permanent deal following his successful loan spell. The 26-year old joined the Partenopei last summer and managed 20 appearances in all competitions this season.
His promising performances have reportedly convinced Napoli to make the move permanent in the summer.
Transfer journalist Nicolò Schira reports that the club have the option to sign him outright for €15 million, but want to reduce the price that Fulham have set.
The league leaders are expected to meet with the Championship club in April to finalise an agreement.