Jim Harbaugh said Tuesday afternoon the process of assembling his coaching staff has already started.

And, per one report, he wasn't kidding.

The Sacramento Bee reported Wednesday that current Southern Cal offensive line coach/running game coordinator Tim Drevno and San Francisco 49ers wide receivers coach John Morton are believed to be joining Harbaugh at Michigan.

Drevno is one of Harbaugh's longest-tenured former assistants, as he was his offensive coordinator at the University of San Diego from 2004-06, a tight ends coach and offensive line coach for Harbaugh at Stanford from 2007-10 and Harbaugh's offensive line coach with the San Francisco 49ers from 2011-13.

USC's Scout.com web site reports that Drevno will serve as Harbaugh's offensive coordinator. Though nothing has been confirmed or made official.

The 45-year-old Drevno spent last season as USC's offensive line coach/running game coordinator. The Trojans ranked No. 68 nationally in rushing offense last season (160.92), though the 49ers were a top five rushing team in his final two years with the franchise.

Morton, meanwhile, is a Michigan native -- from Auburn Hills -- and played collegiately at Grand Rapids Community College and Western Michigan. Morton was Harbaugh's wide receivers coach at San Diego in 2005, and re-joined him with the 49ers, beginning in 2011.

The 45-year-old was also USC's offensive coordinator from 2009-11.

Michigan has not made any assistant coaching hire official at this time.

"I can't tell you that it's going to move fast or slow, but hopefully it moves right," Harbaugh said when discussing his staff. "That's what we'll strive for. To measure twice and cut once."

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