The Blues are rumoured to be closing in on a deal to appoint the former Napoli manager as Antonio Conte’s replacement at Stamford Bridge.
Chelsea FC are thought to be interested in a deal to appoint the controversial Italian head coach as their new boss.
Antonio Conte led Chelsea FC to the Premier League title in the 2016-17 campaign before the Blues eased to a 1-0 win over Manchester United in the FA Cup final at Wembley.
However, the west London side missed out on a top-four finish under Conte last term to raise questions about his long-term future at Stamford Bridge.
The Blues have been heavily linked with a move to appoint Sarri as their new manager following Napoli’s impressive Serie A campaign.
The Napes outfit finished in second place in the Italian top flight behind perennial champions Juventus.
Koulibaly has been regularly linked with a move to Stamford Bridge under Conte’s reign but Chelsea FC have been unable to get a deal over the line.
The Senegal international delivered a glowing review of Sarri ahead of his reported appointment at Chelsea FC.
“They [Chelsea] can expect nice football because he is a very good coach,” Koulibaly told TalkSport.
‘I’m disappointed that he leaves like this but we have now a big coach [Carlo Ancelotti]. We know we can win something with him.
“I hope he will win something with Chelsea because he’s a nice coach.
“When a coach like this comes he needs time. So I think they have to give him time because he will change the football of Chelsea, I think.
“At Napoli we enjoyed it very much as players and the supporters enjoyed it very much. At Chelsea I think it will be the same.”
Chelsea FC finished in fifth place in the Premier League table last term.
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