[BlackcatAlum]

Will the boosters be okay with someone not named Sullivan and let him do his job?

I'm sure if Sullivan turns the job down it'll be a gut punch and set back. They've put all their eggs in that basket and for the right reasons. They're trying to show him they want him and they've not pressured him into any decision. 

IF he does turn the job down, you have to move on and continue to find the right person that can handle this job and meet expectations.