That's not how it works mate. He is Chelsea, through and through, he is a fighter. Cech won't let Courtois take the no. 1 stop without a fight, he's still good enough to be our first choice goalkeeper, he (and Courtois) knows that, so why would he just let Courtois take his spot without any competition? At the end he'll do what's best for the club and himself (leave or stay, depending on who becomes first choice GK)