Courtois is currently on-loan with Atletico Madrid.
He told The Times: "I speak to Christophe Lollichon, the goalkeeping coach, maybe once every two or three weeks. Maybe if I was older and the club had tried to sell me but couldn't, they would have sent me out on loan and forgotten about me, told me not to bother them. But that's not true at all. They make sure I know they are interested in how I am doing.
"It is true that, at the moment, I am not sure what is going to happen next year because it is not only me that decides. It was me that decided to go to Chelsea, though, and I am really happy to be a Chelsea player.
"Before the end of the season, we will sit down and talk again. Whatever decision we take I am sure will be the right one. If I can stay here and we are in the Champions League, maybe that is better than being in the Premier League. I do not have experience in the Champions League, and that is the level Chelsea want me to get to."