Chelsea have signed 19-year-old defender Mamadou Sarr from Strasbourg on an eight-year deal. The France Under-19 international played 27 times in Ligue 1 last season, his first full campaign in the top flight, as they – managed by Liam Rosenior – finished seventh to qualify for the Conference League.

French defender Mamadou Sarr has joined Chelsea from Ligue 1 side Strasbourg on an eight-year contract, the Premier League club said on Monday.Financial details of the deal were not disclosed, but British media reported that Chelsea signed Sarr in a deal worth around 14 million euros ($16 million).

Chelsea transfer news as Mamadou Sarr arrives as the third signing of the summer after Liam Delap and Dario Essugo

Mamadou Sarr is a technically-fine young centre back who has the right mix of physicality to carve a name for himself in the Premier League, but he is likely to need more experience to hone his skills further before he can be expected to reach the level needed for a Chelsea backline player.