Chisora would get dominated. Simple as. End of discussion. Just because Haye lost to the best Heavyweight of this (admittedly not stellar) era doesn't mean a promising but unproven domestic fighter could suddenly beat him up.
Maybe he should fight the retired Carl Thompson for the vacant British heavyweight title or something.
Let's put the fact that it's a ridiculous idea to one side for a second and focus on the impossibility of Carl getting a licence.
Fury/Wilder after he beats Chisora that way the belt is vacant. And Haye manages Price anyway get him to fight McDermott for the time being.