John U. Bacon: 'I have no reason to doubt' that Jim Harbaugh is at Michigan for the long haul

One who's known Michigan's Jim Harbaugh for a long time — having grown up and played youth sports with him in Ann Arbor before writing multiple books on him decades later — was watching closely as the coach flirted with the NFL this past winter. New York Times bestselling author John U. Bacon is as close to the program as any media member — more of an insider than on the outside looking in — having written four publications on the Wolverines, including two involving Harbaugh's coaching career.