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.

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,

AC Milan have signed Portuguese forward Joao Felix from Chelsea on loan for the rest of the season, while Chelsea have brought in French midfielder Mathis Amougou from Saint-Etienne on an eight-year contract,