I'm finding that the traditional "college coach" who has made the jump to the NFL is not one that is favored by players. Chip, Harbough, Saban, these are great college coaches who run tight ships and have extremely rigid expectations. Expectations that can be me by easily influenced young college players for 3 or 4 years. However, bringing this mentality to NFL players seems to be unsettling for their lockrooms. Professionals don't want to be treated like they're in college and prefer to play for more player friendly coaches. Regardless of how successful all three coaches I mentioned are, I believe that their personalities and programs are structured to be successful short term, with new, open minded players every few years