I posted this in another thread, but here's what I found on B1G bowl affiliations.
A Big Ten team will be in the Rose Bowl – it’ll be the champion if not in the College Football Playoff. There can’t be a Big Ten team this year in the Sugar Bowl.
College Football Playoff Semifinal: If Selected
1. Rose Bowl vs. Pac-12
2. Citrus Bowl vs. ACC or SEC
– Agreement for Citrus is for five different teams in six years, so no Minnesota or Michigan, if possible.
3. Outback Bowl vs. SEC
– Agreement is for five different teams in six years, so no Iowa, Wisconsin, Michigan or Northwestern, if possible.
4. San Diego Country Credit Union Holiday Bowl vs. Pac-12
– Agreement is for five different teams in six years, so no Minnesota, Nebraska, Wisconsin or Michigan State, if possible.
5. TaxSlayer Bowl vs. SEC OR
Franklin American Mortgage Music City Bowl vs. SEC
– ACC and Big Ten combine in the Music City and TaxSlayer, with each getting three appearances in six years. The Big Ten played in TaxSlayer in 2015 and the Music City in 2016 and 2017. It’s almost certainly going to be in the TaxSlayer, but no Penn State or Iowa, if possible.
New Era Pinstripe Bowl vs. ACC
– It’s not official, but the bowl would prefer to have eight different teams in eight years, so no Iowa, Northwestern, Penn State or Indiana, if possible.
San Francisco Bowl vs. Pac-12
– Agreement is for five different teams in six years, so no Purdue, Indiana, Maryland or Nebraska, if possible.
Quick Lane Bowl vs. ACC
SERVPRO First Responders Bowl vs. C-USA
– Agreement for three SERVPRO First Responders and three Armed Forces bowls in six years. The Big Ten hasn’t been in the bowl since 2014. The Big 12 is contracted to play in the SERVPRO First Responders in 2019.