Premier League newcomers Sunderland have bolstered their midfield with the signing of Habib Diarra from Strasbourg for a club-record fee.
The Senegal international, who represented France at youth level, made his professional debut for Le Racing in October 2021 after graduating from their academy earlier that same year.
Diarra went on to become a first-team regular at the Stade de la Meinau and he featured 30 times in Ligue 1 last term to help Liam Roseniors side qualify for the UEFA Conference League via their seventh-placed finish.
The 21-year-old midfielder emerged as a target for the Black Cats after they earned promotion back to the top tier of English football via the Championship playoffs in May following an eight-year absence.
Diarra completed his medical on Wearside on Saturday before penning a deal worth an initial 31.5million plus 4m in add-ons, eclipsing the 23m fee Sunderland paid Roma to make Enzo Le Fees loan move permanent last month.