By Madison Williams Jim Harbaugh as been with Michigan since the 2015 season, but despite nearly a decade with the Wolverines, he has never been able to shake rumors of a potential return to the NFL. Ahead of the Wolverines’ Rose Bowl matchup vs. Alabama on Monday, Michigan reportedly offered Harbaugh a contract extension that includes a clause stipulating that he cannot seek or entertain NFL coaching offers for the 2024 season. That inclusion only made the rumors louder, and on Wednesday, Harbaugh was asked about a possible return to the pros, specifically top job with the Los Angeles Charger…