The Belgian star has become the subject of interest from French giants Paris Saint-Germain but insists he is not thinking about his future anywhere else but at Stamford Bridge.
"It has never been a question to leave Chelsea for me," he told L'Equipe. "I am very happy at the club, where I still have a lot to do.
"It is an honour to hear that PSG are interested in me, but it doesn't disturb me. I know exactly what is in my mind. No one will make me change.
"I try to get inspired by their daily work. It makes me grow. That is why I believe my best years are yet to come."
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