Chelsea is one of the teams interested in Karim Coulibaly, an 18-year-old defender for Werder Bremen who has German and Ivorian nationalities. Many clubs in Europe are impressed by the player, and Newcastle, Naples, and Paris Saint-Germain are also among the interested clubs. Werder Bremen is reportedly hoping for a transfer fee between €40 million and €50 million for the young German international. Coulibaly's contract with the German club is valid until June 2029, and he has made 22 appearances and scored one goal in the current Bundesliga season. His market value is estimated by Transfermarkt at €22.00m. During the winter 2026 transfer window, the club reportedly rejected multiple offers, one of which was for €20 million.