People keep clinging to this "but the NCAA cleared Butch" notion are ignoring the bigger reality.
UM suffered tremendously over the Shapiro NCAA scandal and embarrassment. The administration and BOT saw it as a huge black eye. Its one reason they extended AG and really liked him, because he was squeaky clean and presented a very clean image of the program.
Butch is tainted. There is NO way anyone can avoid that. The media cannot mentioned Butch without bringing up the UNC fraud case. People also tend to forget he was the HC during the John Blake fiasco at UNC. In the world of public relations and media, Butch has a negative/sleazy stigma attached to him. This is made INFINITELY worse by the fact that UM is on probation with the NCAA. Hiring an HC that was fired during a huge NCAA scandal at another school would generate a lot of bad press for UM. There has now been at least one notable player that has come out and accused Butch of having known about the academic fraud, and even provided a quote of Butch saying "If you wanted an education you should have gone to Harvard". Butch has all but admitted he made the statement and has tried to spin it as "it was taken out of context". But anyway you spin that, when added to the heap of negative crap around his time at UNC, it further makes him very difficult for anyone to hire.
And then you have the fact that many around UM still see Butch as an opportunist that publically lied and bolted and burned bridges at UM upon his departure. This may actually be the LEAST important issue here, but its still an issue. For people who may not care about football as much, if they see Butch as a snake, or someone untrustworthy and duplicitous, they aren't going to hire him.
I think people need to get real about the Butch situation. Yes, he is ABSOLUTELY the best HC option we have right now in a perfect world. I would love to have Butch back. But Butch has made too much of a mess for himself over the years, and given UM's current situation, and what went down over the Shapiro mess, I think its HIGHLY unlikely that Butch would be seriously considered for the job. I hope Im wrong, but I think people pining for Butch are just setting themselves up for major disappointment.