Obviously not to a STFU moment. But, that moment will come if he causes grief inside the team. He knows this and the rumor is he'll have an announcement soon, so maybe he doesn't care.
Without Carlos driving at his peak, Ferrari will not be able to guarantee second in constructors let alone challenge for first as perez continues to contribute nada to red bull. I'd imagine they'd like to continue to be second and specifically ahead of maclaren. To do that they'll need him to be motivated to be a driver and I don't know much about him but if I've seen anything from the races, it's that he's motivated by personal achievements.
Either way double Ferrari dnf from infighting entertains me greatly. :)