After Jim Harbaugh received a four-year show-cause from the NCAA as a result of recruiting violations at Michigan during the COVID-19 dead period, some wondered how the NFL would respond. There are parallels to the Jim Tressel’s penalties following violations committed at Ohio State in 2011. Harbaugh, of course, is now the head coach of the Los Angeles Chargers and no longer in college football. According to Pro Football Talk’s Mike Florio, the NFL declined to comment on if there was a precedent set that year. Tressel received a five-year show-cause as part of that investigation and would’ve h…