FWIW. Michigan doesn't seem inclined to get re-involved.
MIchigan is the top team in the B1G according to The Sagarin poll. Below I list the PREDICTOR ratings--which are the best in actually predicting game outcomes. I also list the overall national rank according to these ratings.*
1. Michigan (#13 overall, rating 85.33)
2. Ohio (#18 overall, rating 83.15) INELIGIBLE for postseason
3. Neb (#23, rating 81.74)
4. Wisconsin (#27, rating 79.69)
5. PSU (#28, 79.64) ALSO INELIGIBLE for postseason
6. MSU (#36. 77.2)
One predicts the outcome of future games by subtracting the two Sagarin PREDICTOR ratings (with + or -3 for Home Field). So, if we play Wisc in INDY for the B1G title, we should be favored by 5-6 points. If Ohio were not ineligible and Michigan played them in INDY, UM would beat Ohio. In Columbus, the game would be essentially a tossup (less than a one point margin). Also, Michigan would be favored over MSU by 8 points on a neutral field and by 11 points this coming week in Ann Arbor (+3 for home field).
I don't know what the Vegas point spread is, but I suspect that it will be smaller, since UM-MSU is a rivalry game.
*Michigan also is #1 when Sagarin's PREDICTOR ratings are averaged with the ELO-CHESS ratings. The latter do not consider point margins and are not as good in predicting actual game outcomes. Regrettably, the overall BCS computer rankings use the ELO-CHESS Sagarin ratings--as well as other computer polls that often overweigh WL records and underweigh SOS. So, we will not do as well when the BCS computer rankings come out. However, I do not believe that any of these alternative ranks has been shown to do as well as the Sagarin PREDICTOR ratings in forecasting actual game outcomes. And that's what's important in predicting the rest of the UM season.