It's interesting to wonder whether Bielema would be the same coach he was 3 years ago after spending some time in the pros, and having had such a negative reaction upon leaving.
Potential coordinators he's worked with before are plausibly available all over the place. Matt Canada, Dan Enos, and probably Jim Chaney on offense, Paul Rhoads and Charlie Partridge on defense, he could throw together a totally conventional Bielema staff very easily. Does he want to?
As for any complaining about his hiring, there's plenty of reason for skepticism, his desire to go back to the college HC duties he was openly sick of most of all, and another retread doesn't necessarily thrill me, but his tenure at Arkansas kinda grows in retrospect, and while he's definitely a jerk, is he any more so than Brad Underwood if we're being honest?