Not sure if you want to count 49'ers starting center Jonathan Goodwin who started as a freshman for Ohio before transferring to Michigan where his brother Harold had played and who was a graduate assistant at the time. Harold is now the OC for the Arizona Cardinals.
I know we like to rip those who leave Ohio and I don't care for Michigan myself, but it was a good move for him.
Update on Landon:
http://www.goupstate.com/article/20140622/ARTICLES/140629925