“Coulibaly is one of the elite defenders in the world and we are delighted to welcome him to Chelsea.
An excellent leader and exemplary team player, Kalidou has a wealth of experience and qualities that will benefit our team and the club as a whole, ”Chelsea co-owner Todd Boehly quoted the club’s official website as saying.
The contract with the player is signed for four years.
In the 2021/22 season, the footballer played 34 matches in all competitions, scored three goals and gave three assists.
It was previously reported that Chelsea would pay €40 million for Koulibaly.