Despite the constant 8-8 seasons, the feeling the underachieved in a few seasons, and the bizaare breakdowns in playoff games and the Super Bowl, Fisher overall was a very good coach who was highly respected around the league in his prime, and had success with 2 different rosters at Tennessee. If we end up on NCAA probation and Pruitt is fired, he would be a name to consider. He has had experience leading teams through location changes (Houston to Memphis to Vanderbilt to Nashville and St. Louis to Los Angeles), which is challenging, so he may be able to handle getting a team to be competitive during sanctions.
IMHO the McNair/George Titan teams were 1 or 2 receivers away from a championship. Besides Mason (maybe Drew Bennett?), Wycheck, and George out of the backfield, McNair nor his "successors" never had many weapons to choose from at WR. It wasn't for lack of trying: the Titans swung and missed on the iconic Kevin Dyson and Tyrone Calico in drafts, Yancey Thigpen and Carl Pickens in free agency, and when they claimed Randy Moss off waivers, they barely used him. Of course, when you have a bruiser like Eddie George plus special teams and defenses that could pin teams deep into their own territory and flip the field (how many of the Titans scoring drives were 50-65 yards?), maybe they thought they didn't need big-play receivers!
And could the Buddy Ryan 46 defense be adapted to the college game? That's what Fisher is familiar with and would probably try to shoehorn it in.
And a question about Gruden: Given his Raider and Buc teams were loaded with experienced veterans, how many young players did Gruden actually develop?