I don't see Harbaugh going to the NFL because there's no way he'd command the type of control and power he wields in Ann Arbor. In the NFL, Harbaugh would be subject to the same rules everyone else plays by. Sure he'd get a boatload of money and maybe some type of semi-GM power, but a couple bad years and he'd be fired or on the hot seat; Gruden is gonna learn that lesson soon.
Whereas in Ann Arbor he out ranks the athletic director, hasn't won shyt in 4 years and is facing no pressure. Any talk of him being on the hot seat is quickly silenced by people who scream "but we wouldn't be able to find a better coach" as if that's a logical argument...but it works.
Michigan will be ranked high for most of next season,
they'll beat MSU/PSU/Wisconsin...and then lose to OSU more than likely. I don't know off hand what OSU's QB situation will be like next year so Michigan has a chance...but then again I didn't expect Haskins to be this good. Gonna assume they have someone in the wings who will keep throwing TDs.