Tweeted this earlier whilst I was out, here's a more detailed look:
If Michigan does lose out on Zach Banner, they'll still have a chance to land a major west coast offensive tackle now that Arik Armstead is considering the Wolverines! Armstead is the #1 player in the nation according to scout.com and 247sports, but he's been a USC commit for a long time, so he wasn't even on the radar.
He decommitted over the weekend, and it looks like these lucky schools will be in with a shout; Michigan, Cal, Notre Dame, Alabama, and probably USC still. With five schools seemingly still in the race, all of them should be guaranteed an official visit. Apparently he's already set up visits to Notre Dame and Alabama in the coming weeks.
Ideally, Michigan needs to get him on campus for the Ohio State game, which is the one weekend left in the recruiting calender that could really blow him away. If Michigan really wants to gain an advantage, they could tell him he'll play defense in Ann Arbor, because Armstead has said from Day 1 that he wants to play D-Line.
Whatever happens, it's definitely something to look out for, and it's really encouraging to see the top prospects in the nation starting to take a second look at Michigan.