Joao Felix is unsure about his future at Chelsea beyond the end of the season.
Felix is on-loan from Atletico Madrid - without a purchase option.
He told AS: "Chelsea has no purchase option, so the club has to agree with Atletico Madrid.
"I've only been here a few weeks and I'm getting to know everything. I'm fine, but no one can predict the future.
"I have been looking for a change for a while because it was difficult to get used to the style of play. I left the club because my head was struggling to keep trying.
"It had to stay in this transfer window, and I think it has been good for both Atletico and me."