Jim Hermann's name is being tossed around as a viable DC candidate. Stadium & Main thread
here
He was loathed by UM fans for his defense's inability to handle the spread. Ron English was going to be the savior, but that honeymoon ended quickly. Then Barwis was going to change things, but still UM struggles badly with basic fundamentals against explosive offenses (especially "spread" variations).
He went back to the NFL after UM, and he's is viewed as a smart defensive mind, perhaps too much so (overly complex) for the michigan defenders. Working with Kris Jenkins & Jonathan Vilma is a bit different than Ernest Shazor & Shawn Crable.