Even if he only stays another 18 months (I don't think he'll last that long personally), just stick another 18 months on top of the players I listed earlier.
You absolutely cane their resale value/ability/fitness/likelihood of injury.
It's like a vicious circle.
Also when he does go, where do they go next? Really this is it. If the fans get on the case of MoNg and his magic black cats tattoo, then who with any reputation will want to take them on?
They'll not get a high profile manager in, that means doing some actual work and picking someone from the lower leagues, upsetting the fans from the off and sticking by the decision when times are tough, and they will be for the reasons you point out.
You're really looking at an absolutely masterstroke of an appointment, a wenger-esque appointment as Arsenal did back in the day.
Are their board capable of that? I don't see it.
If they appoint a relative unknown, will he get the time? I doubt it.
It's fucking fantastic to watch.