Joao Felix said: ‘Chelsea is one of the great teams in the world and I hope to help the team reach their objectives, so I am very, very happy to be here and very excited to play at Stamford Bridge."
Chelsea made nine signings in the summer to mark the beginning of the Todd Boehly era at Stamford Bridge - Raheem Sterling, Kalidou Koulibaly, Marc Cucurella, Gabriel Slonina, Carney Chukwuemeka, Cesare Casadei, Wesley Fofana, Pierre-Emerick Aubameyang and Denis Zakaria.
January looks set to be another busy month, with Felix joining Benoît Badiashile, David Fofana and Andrey Santos in making the switch to Chelsea during the winter window.