Setting aside how well he played, Graham has been a walking advertisment for Michigan throughout the last several days. He's thoughtful, energetic, a good interview/quotable, and clearly the leader of the Philly defense. He constantly improved as a pro from a pretty crappy first few years. I think if he wants it (I imagine he wont NEED it financially) he'd be a great coaching prospect.
I don't know what sort of outreach the program does to successful alumni, but I hope they're keeping Graham involved as much as possible.