Chelsea have announced the signing of Mamadou Sarr from Ligue 1 outfit RC Strasbourg.. The 19-year-old penned a contract until 2033.. Sarr was a regular for Strasbourg during the 2024/25 campaign and played a key role in the French team securing qualification for European football next season.. The 19-year-old made 28 appearances across all competitions and helped the club seal a place in next season’s UEFA Conference League play-off.. The centre-back first showed his high potential in the academy of RC Lens before joining Lyon.. Read Also:‘I Just Believed’ — Alcaraz Talks Up ‘Remarkable’ French Open Final Comeback Win Over Sinner. Having progressed through the club’s youth ranks, he made his senior debut during the penultimate game of the 2022/23 season.. The influential defender was handed two more senior outings during the following campaign before he embarked on a five-month loan spell at Belgian club RWD Molenbeek.. Sarr, a France U-20 international, joined Strasbourg last August and quickly established himself as a regular starter in defence.. He made 27 starts in Ligue 1 as Strasbourg claimed a seventh-place finish.. The youngster is the son of Senegal World Cup veteran and former Lens midfielder Pape Sarr.