Rassoul Ndiaye is a central midfielder who came through Sochaux's academy. He signed his first professional contract with Sochaux in March 2019 and made his senior debut later that year in a Coupe de la Ligue match against Paris FC. After several seasons in Ligue 2 with Sochaux, he moved to Le Havre in 2023 and became part of their Ligue 1 squad. Born in France, he has represented Senegal, including at under-23 and senior levels.