Etienne worth in the region of €15 million ($15.5m), sources have told ESPN. The sources added 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 has confirmed the signing of 19-year-old midfielder Mathis Amougou from Saint-Etienne. Amougou who made 17 top-flight appearances for the French club signed an eight-year contract at Stamford Bridge.

Chelsea have confirmed the signing of Saint-Etienne midfielder Mathis Amougou in a deal worth around £12million. The 19-year-old has signed a long-term contract. Chelsea were scouring the market for a new midfielder and struck a deal for Amougou on Deadline Day.