Some spanish media is reporting that Ferrari is considering their optiond for the apeal
What, three days after the race?
If they really intended to appeal, they would have done it by now. Probably during the race. And even if they did protest it, the FIA would be unlikely to change the race result because it would change the championship result. Any post-race penalty would come in the shape of a time penalty being added onto Vettel’s time. Since the race finished under safety cars, that would move Vettel out of the points and hand the title to Alonso. I think the FIA would be very hesitant to do that.