This is very limited by the list of drivers with enough points.
Did someone come up with a loophole that allowed a driver to sneak in without the required amount of points/time?
Otherwise it is just a question of who is on the list (not contracted), and who will not do it.
Getting involved in politics, the obvious name is Kvyat, Dependant on what sort of contract he has with Ferrari, but I would think it unlikely not to have a get out of jail for a drive clause.
When arguing with a fool, be sure the other person is not doing the same thing.