Chelsea have announced on their official website that Jay Dasilva has signed a new four-year contract with the club.
The defender will spend next season at Charlton Athletic on loan.
Addicks manager Karl Robinson was full of praise for the youngster as he described him as an important player and one who adds talent and pace to the team.
"Everyone at the football club saw how influential he was in the last few games of the season," Robinson told cafc.co.uk.
"He worked really hard to put himself in that position to play. We had so many options in that position over the summer but we held out and we waited and we waited.
"One thing I've noticed about being here is everyone loves attacking full backs who get crosses in and playing with a youthful enthusiasm which Jay does. It's an important one for us.
"He brings pace, talent, desire and a willingness to improve. He's only going to keep improving.
"Winning the trophy in the summer and captaining that team to victory, it was an amazing time for him. Hopefully he can have an amazing season after his successful summer."
