The former Benfica star, who has 20 goal contributions this season, seemed to suggest he was happy at Stamford Bridge earlier this month.
He said: "I’m so happy with my numbers. Being a box-to-box midfielder, it’s a really good number of goals and assists. It was difficult in the beginning, getting to know (head coach) Enzo [Maresca] and the way he wanted to play, but now I totally understand him and what he wants from me."