According to UK news, Chelsea top brass have just submitted Napoli a €23.5/£18m in order to sign Senegalese international centre-back Kalidou Koulibaly, who turned 25 just two days ago.
While former Genk player, an Azzurri member since 2014/15, is still asking Italian club a salary raise, in order to bring his annual income to €3/£2.3m, Chelsea are ready to start a long and hard negotiation, and possibly raise the the bar on their proposal.
Source: transfermarketweb.com