https://yestino.com/entities/chelsea-mamadou-sarr-318aadEvery event involving Chelsea Mamadou Sarrenhttps://yestino.com/events/chelsea-s-mamadou-sarr-set-to-join-real-sociedad-on-season-l-08a092https://yestino.com/events/chelsea-s-mamadou-sarr-set-to-join-real-sociedad-on-season-l-08a092Mon, 24 Aug 2026 21:49:19 GMTSarr is one of several Chelsea centre-backs who have been deemed surplus to requirements this summer. Sources: The Athletic