Jim Harbaugh's decision: Is timing right for Michigan coach to return to NFL?

Jim Harbaugh has been highly successful at both the NFL and college levels, but has yet to win a championship. Does he want another crack at the NFL?

source https://www.sportingnews.com/us/ncaa-football/news/jim-harbaugh-decision-michigan-coach-return-to-nfl/h5dxai4wcvoutwdp14xxlzs2