I think it is highly unlikely that none of those managers want to come. It is still a well paid job in the Premier league with the likelihood that if it goes wrong no one will blame you, it would be blamed on the situation.
All of the indication from those with a line inside the club are saying that Marinakis is giving Cooper every chance to turn this around, so I don't think I agree with that.
The two Luton goals were scored because Cooper decided to change the balance of a team that was cruising to a win. And if we're putting players under patios for fucking up we'd have about 6 players available for selection right now, given we're conceding almost 2 per game.
We can persuade Ibrahima Sangare, Keilor Navas and Jesse Lingard to join the club, but we can't find anyone decent interested in managing it? Nah, not buying that. Managing in the Premier League is pretty much the pinnacle of football.