Bill McCartney was an assistant to Bo Schembechler at Michigan from 1974-1981, the last 5 as defensive coordinator. During that time, Michigan only finished 1 season ranked outside the Top 10 (#19). Before that, he'd been a high school head coach who won 2 state championships in Ohio. With that kind of pedigree, patience is much easier to come by. Time is much easier to grant. It would be like if CU hired Kirby Smart. 5 years as the Assistant HC / DC at Alabama. His previous 5 years in coaching were Florida State, LSU, Georgia and the Miami Dolphins (moved around a lot because Saban keeps hiring him). With that record, you can have confidence that he's got what it takes. Embree was a high risk hire. You simply don't grant the same level of patience to high risk hires.