According to Italian newspaper, Corriere Della Sera, the Blues and Spurs are both targeting a huge deal for the 28-year-old Senegal international and have made contacts with the player’s representatives over a £100million deal.
The report claimed the both Premier League clubs’ managers, Jose Mourinho and Frank Lampard are keen to bolster their squads in this January’s transfer window.
Speaking on a potential move to other clubs, Koulibaly told Rai Sport last year: “My future? I don’t. I don’t know if I’m one of the strongest defenders. I always try to give my best.
“Since I’m here, I always try to grow with Napoli. I have a lot of motivation to go on and I want to keep doing this.
“I am pleased that many teams follow me, but I want to demonstrate on the field that I am at the level of the greatest and I want to show it in the future.”