MSU is going to need big special teams plays and to win the turnover battle.
Aside from Allen, they started a true freshman, a redshirt freshman and two true sophomores on the OL and it looked it. They generated absolutely zero run blocking. And while Iowa's defense is no slouch, Michigan's line is a whole different level of nasty. I know Brown is Dr. Blitz, but I don't see why he'll have to. They are going to cause all kinds of having with just four.