Pete Carroll would be a dream, but its hard to imagine he leaves with all that talent still in their primes.
Dan Quinn would be another dream. Falcons are still a good team though. He has SEC experience.
Bill OBriens contract is up at the end of the year, he could be interested although he finally has his franchise QB so that is likely too enticing to leave. He would be a good pick though, I think he would bring some of that Nick Saban/Bill Belichick gravitas to UT.
Jay Gruden probably wants out, its Washington so of course he does. Maybe the insiders have been hearing Gruden all along and assuming it was Jon...could be Jay with the brother connection?
Dirk Koetter might be interested in getting back into college...Im not interested in him though. His time at ASU was disappointing at best.
Todd Bowles hasnt coached in college in a long time and even then his experience is limited. Hes a players coach though and likely would have the team playing hard football. Hard to know how he would recruit. He would probably bring Kacy Rodgers with him.
Smart money is on Hue Jackson. Theres always been talk of friction with the front office in Cleveland. Theres the Haslam connection. He was rumored to be interested in UT last go around. Id love to have him, I think he would do well at UT.