Jim Harbaugh has coached a handful of talented quarterbacks during his time as a head coach for the University of San Diego, Stanford, the San Francisco 49ers, and the University of Michigan.
In that time, the best was Andrew Luck at Stanford. Luck finished second in the Heisman Trophy voting twice during the 2010 and 2011 seasons, and was the No. 1 overall pick for the Indianapolis Colts in the 2012 NFL Draft.
Taking that into consideration, Harbaugh admitted J.J. McCarthy reminded him of Luck during his first practice at Michigan.