The Big Ten has 8 annual bowl slots. Here is the general. If a one loss East champ loses to a 3 or 4 loss West champ would they be selected? I think not. In that scenario, a 6 and 6 Big Ten team might not make a bowl game. Beyond the Citrus, the order is not set in stone however and there are rules for all games not-named the Rose Bowl. For example, with one exception, an 8-4 team can't be selected ahead of a 10-2. I think that exception will occur this year. This list does not include a second NY6 game which will very likely get as we will probably have four 10 win teams in Ohio State, Iowa, Michigan and Michigan State.
Rose Bowl
Citrus Bowl
Outback Bowl
Music City Bowl
Las Vegas Bowl
Pinstripe Bowl
Guaranteed Rate Bowl
Quick Lane Bowl
If the season plays out as I expect, here is what I think happens. This includes a playoff and a second NY6 game. The last bowl bid would be decided on rivalry weekend with Rutgers and Maryland fighting for their 6th win. The Music City, Vegas, Pinstripe and Guaranteed Rate Bowls will be very fluid and the pairing will be based on opponent. Unless we win out, getting to the Outback Bowl is not possible.
Cotton Bowl (playoff) - Ohio State 12-1 (Big Ten champ)
Rose Bowl - Michigan 10-2
Fiesta Bowl (NY6 at-large) 10-2
Citrus Bowl - Wisconsin 9-4 (West champ)
Outback Bowl - Iowa 10-2
Music City Bowl - Purdue 8-4
Las Vegas Bowl - Purdue 7-5
Pinstripe Bowl - Penn State 7-5
Guaranteed Rate Bowl - Minnesota 7-5
Quick Lane Bowl - Maryland/Rutgers 6-6