Brown is the D.C. at Notre Dame... he would never come to UM and take a position-coach job. Plus, I always thought his stop in South Bend was temp. until he got a head coaching gig.
If he is let go... I bet he gets hired at a big time program as D.C. or becomes a head coach at a starter school (probably MAC).
If, however, he is true blue (despite his time in SB) then I would love his recruiting in Ann Arbor