He isn't stupid. First of all, he has said "like Chelsea", which doesn't mean "every player wants to play for Chelsea" but "every player wants to play for a big team like Chelsea (among others)." Then if he mentioned Chelsea, that was because we were the only club having a real interest in him back then. Now other teams have entered the race to sign him, he flatters those teams. Which is normal, he just prepares his future in Europe.