This is just a regular home and home series, nothing with the B1G-Pac12 deal. That deal will start in 2017, and the teams/matchups will rotate, so its not like we are matched up with oregon and northwestern is matched up with stanford, its just a coincidence. They are taking WVU's place because WVU opted out after its move to the big 12.
FWIW. Michigan doesn't seem inclined to get re-involved.