I posted this yesterday (it's a cut and paste). We need to be realistic about the hire. We're very likely not luring a proven commodity from a P5 program....
Like I posted earlier, (imo) a REALISTIC hire is Bryan Harsin at Boise (although he is a former Boise player and was born in Boise, so pulling him could be hard). But his track record is super impressive (61-5 as the OC at Boise, 7-5 in one year at Arkansas State, and 31-8 in 3 years a BSU).
Others to consider:
Matt Rhule at Temple (27-23 overall, but 10-4 and 9-3 this year...likely a 10th win coming).
Neil Brown at Troy (13-10 overall, former UK coach and player) - I'd prefer a coach w/ more experience but his offense is great (not above average, but great).
Phillip Montgomery at Tulsa (15-10, another great offensive coach) - again, would prefer more experience.
Jeff Brohm at Western Kentucky (29-10, former Petrino assistant).
Larry Fedora.
Scott Satterfield, Appalachian State (31-18, led them from 1AA to D1).