Chelsea announced that they extended David Luiz's contract through 2021.

Luiz's contract was set to expire this summer, but he has become a key part of Maurizio Sarri's side. 

"I am so happy to be here and to have this opportunity to stay. I love this club and I still have the ambition of a young player. It means a lot to reach another European final, and we still have the opportunity to finish in the top three of the Premier League this season and I will continue to try to do my best to help the team," David Luiz said.