Chelsea's England Under-21 midfielder Mason Mount signs a contract committing him to the club until 2024.
Mount, 20, joined Chelsea in 2005, aged six, and was part of the side that won the FA Youth Cup in 2016 and 2017.
The England Under-21 international spent last season on loan at Derby, then managed by new Chelsea boss Frank Lampard, helping the club reach the Championship play-off final.
