In January, the clubs reached an €14million (£11.9m; $14.4m) agreement for the centre-back to move at the end of the season.

Chelsea have completed the signing of Mamadou Sarr from RC Strasbourg, with the 19-year-old defender penning a contract until ...

Chelsea have signed Mamadou Sarr from Ligue 1 side Strasbourg, the club have confirmed. The 19-year-old has signed an ...

French defender Mamadou Sarr has joined Chelsea from Ligue 1 side Strasbourg on an eight-year contract, the Premier League ...

Chelsea have signed French teenager Mamadou Sarr Sarr from Strasbourg on an eight-year contract to keep him at the club until ...

Chelsea has signed a top young player from its sister club by bringing in French teenage defender Mamadou Sarr from Strasbourg ...

France U-19 international Mamadou Sarr signed an eight-year contract with Chelsea after sealing the transfer from Strasbourg ...

Chelsea signed a top young player from its sister club by bringing in French teenage defender Mamadou Sarr from Strasbourg on ...

Chelsea’s third official signing of the summer is young center back Mamadou Sarr, who has today completed his move to the ...