"Napoli" fans are upset about the sale of K. Koulibaly © AFP

Football world will soon hear about another high-profile transfer. London's "Chelsea" is buying Napoli defender Kalidou Koulibaly for 40 million euros, who is traveling to England to undergo a medical examination. Upon hearing this news, Napoli fans did not hide their disappointment, as the club has previously lost players like Lorenzo Insigne and Dries Mertens. During Napoli's pre-season camp, fans demanded explanations from the club's director Cristiano Giuntoli, who replied: "It is not up to us." The "Serie A" club is trying to significantly reduce expenses on players' salaries and in the future will strive to ensure that no footballer is paid more than 3.5 million euros per season.