Napoli president Aurelio De Laurentiis has claimed Chelsea tabled an EUR58 million offer for Kalidou Koulibaly in the closing stages of the transfer window.
The Senegal international was heavily linked with a move away from Napoli ahead of the 2016-17 campaign, with Antonio Conte reportedly keen to lure him Stamford Bridge.
Nevertheless, Napoli refused to sell Koulibaly, who eventually signed a new and improved deal - that runs until 2021 - with the Serie A side instead.
"In the last few days of the transfer market, I refused an offer worth EUR58million for Koulibaly," De Laurentiis told reporters.
"Conte will say that it is not true, but he offered 30, then 40 and then EUR50million.
"But I had already made the decision for myself that he would stay put for another year.
"We can talk again next year..."