Chelsea confirmed the signing of 19-year-old midfielder Mathis Amougou from Saint-Etienne on Tuesday. Amougou, who made 17 top-flight appearances for the French club, signed an eight-year contract at Stamford Bridge.

Chelsea have on Tuesday confirmed the transfer of Mathis Amougou from Saint-Etienne. Sources told ESPN the deal for the midfielder is worth in the region of €15 million ($15.5m), and that the 19-year-old midfielder is more likely to join the Blues' first-team setup immediately as opposed to joining Chelsea's sister club Strasbourg on loan,

Chelsea have tied up the signing of Saint-Étienne midfielder Mathis Amougou.Amougou has enjoyed a breakthrough season for Eirik Horneland's side with 17  senior appearances in their first season

French teenager Mathis Amougou on Tuesday signed for Chelsea from Saint-Etienne in a deal reported to be worth €15 million.

Chelsea have made a deadline day signing that’s impressively on-brand for our BlueCo ownership, agreeing a long-term deal with 19-year-old midfielder Mathis Amougou.

Chelsea sign Ligue 1 midfielder on eight-year contract. 90min. Chelsea confirm £12m Mathis Amougou signing in final arrival of winter transfer window. Evening Stand

Chelsea have confirmed the signing of midfielder Mathis Amougou from Saint-Etienne. Amougou, who has made 17 appearances in Ligue 1 this season, including nine starts, has moved to Stamford Bridge for a fee in the region of £12.

Chelsea announced the signing of Amougou from Saint-Etienne on a staggering eight-year contract. The 19-year-old is reported to have cost around £12 million ($15m) and he is expected to go into the club's first-team squad.