Chelsea director Marina Granovskaia added: ‘Callum showed last season just what a thrilling talent he is. We are delighted he has committed to Chelsea and we are all excited about the prospect of seeing him continue to blossom in the years ahead.



‘The club has already been rewarded this season by some brilliant performances from our young Academy graduates, and Callum’s new contract guarantees Frank has another outstanding prospect at his disposal.’



While injury cut short a season full of promise, the youngster clearly caught the eye and his potential was highlighted by Frank Lampard as early as his first media conference as our new head coach.



‘I have seen Callum come through and he’s a fantastic talent,’ said Lampard. ‘He is going to be central for us on the pitch and that is the opportunity in front of him now.



‘There are things as a young player that he will want to improve but he can be central to this team and for England. I want to work with him, I want to drive him forward and I want to improve him as a player.



‘Callum can show, right here at Chelsea, the club he came through the Academy at, that he is going to be a world-class player because I truly believe that.’

