San Francisco 49ers head coach Jim Harbaugh has reportedly accepted Michigan's offer to return to his alma mater and become the Wolverines' next head coach, according to CSNBayArea.com, which reports that Harbaugh will be announced at a press conference in Ann Arbor on Tuesday morning. Jason Cole of Bleacher Report and writer John U. Bacon, author of several books about Michigan football, also reported on Saturday that Harbaugh was expected to accept the Michigan job.