Luciano Spalletti will reportedly resign as Napoli manager if the club sells Kalidou Koulibaly this summer, with the defender attracting interest from Barcelona, Chelsea and Juventus.
The Senegalese international, who only has one year left on his deal, helped Napoli to a third-place finish in Serie A last campaign, just seven points off title-winners AC Milan.
His defending contributed to Napoli boasting the joint-best defensive record in the division, conceding just 31 goals in 38 matches.
Koulibaly's talents at the back have been highly sought after in recent transfer windows and this summer is no exception.