This is becoming more and more of a problem for Ferrari. If you are to believe what is being written, no one wants the job. There's a story out there that they went up and down the paddock at Abu Dhabi and everyone turned them down, including a lucrative offer to Horner that would basically ensure a comfortable retirement.
4 TDs in the last 9 years, allowing all these rumors to run without acknowledgement or denial; It's definitely not a good look. They'll end up having to convince Binotto to stay since they can't find a better replacement, and agree to his keeping everyone on the current staff, and with the same no clear #1 driver lineup. Eventually Charles will leave to Mercedes after Hamilton retires or to RB after Perez's contract is up.
Success is a lousy teacher. It seduces smart people into thinking they can't lose.