I don't think Butch will be fired. Nor do I think he should without the chance to overhaul his staff. But if he lacks resiliency and walks away on his own...
$6 million dollar men:
Chris Petersen - #1 on my list in 2008, still #1 on my list now. Make him say "no," then offer more.
Chip Kelly - make him say "no," but only after you've made Petersen say "no" at least 3 times.
$3 million - $4.5 million:
someone who's been a successful college head coach, knows the SEC, and/or has NFL experience.
MacIntyre - SEC experience. NFL experience. One of the most successful members of the Cutcliffe coaching tree. And he's gone 10-2 vs. a schedule in which virtually every opponent has had several cycles of higher rated recruiting classes, meaning this year's success is a product of pure coaching (scouting, player development, X's and O's, etc.).
Right now anything other than those 3-4 would concern me