Notre Dame had been slightly favored. But since the news of Shea Patterson being cleared to play came out publicly yesterday, 5Dimes has switched Michigan to being slightly favored. I'm thinking the point spread will grow in favor of Michigan by time the game happens.
Scroll down at link to see the point spread. Check the 'College' box at the upper left: https://www.5dimes.eu/livelines/livelines.aspx#al_1