Despite Chelsea having forked out £566m on new players since Todd Boehly became the club's owner, the Blues have regularly produced talented players from their academy.
Some stars have slipped through the net, with the club surely regretting their decision to release Declan Rice, who has since gone on to become West Ham captain and a key figure in the England side.
Several other players began their careers at Chelsea before going on to make appearances for different Premier League clubs.
Sportsmail has complied pictures of some former prospects to have been part of the Chelsea academy, before making their names elsewhere.