At least one report has surfaced Saturday afternoon that Michigan assistant, Jerry Montgomery, has accepted Okahoma's offer to become their new defensive line coach. Michigan's Scout.com site is reporting that an announcement could come as early as Monday. According to that same report, "Michigan offered a competitive compensation package to Montgomery, but ultimately he felt the opportunity at Oklahoma was clearly one he couldn't pass up."
Adding to the speculation this initial report could be accurate is a tweet that one Michigan player, 2013 five star recruit Ondre Pipkins (anybody else cool with Montgomery bringing a five star defensive tackle or two to Norman?), sent out Saturday as well.
Want to wish Coach Montgomery and his family luck at #Oklahoma he taught me a lot and I'll never forget the talks we had Love you coach— peeweeuofm9456 (@PeeWeeUofM9456) February 23, 2013
While we are still waiting for those on the Oklahoma side of things to confirm, it would appear as though it's more a matter of when rather than if at this point. Bare in mind, this is just one report and while we're not calling it into question nothing is ever truly official until it can be confirmed by multiple sources and/or it comes from OU.