Drevno, 45, worked with new Michigan Coach
At USC, Drevno oversaw a unit that included three freshmen – Toa Lobendahn, Damien Mama and Viane Talamaivao – who started games.
Zach Banner, who started at right tackle, wrote on his Twitter account: "I am happy for Coach Drev and wish him luck with his new job because he deserves it. He has a great opportunity. I love that guy."
Earlier this week, Sarkisian did not indicate that there would be a major shake-up among assistants.
"There's a lot of coaches around the country that would to love to coach at USC," he told reporters Sunday. "I have a firm belief in our coaching staff. I think these guys did a really good job this year, we're only going to get better heading into Year 2 within our systems and I'm hopeful that we have all of them back next year."