At this point I think OSU, IU, and Oregon are set in the playoff. I think everyone's assuming USC and UW go to the better remaining PAC-affiliated bowls because the PAC alternatives are Utah and the Arizona schools.
Michigan seems like a lock for the Citrus, which leaves Illinois, Iowa, Nebraska, Minnesota, PSU, and NU slotting into the Reliaquest, Music City, Las Vegas, Pinstripe, GameAbove, Rate Bowls. Guy at Athlon puts us in the Pinstripe Bowl vs Clemson with Iowa-Vandy in the Reliaquest, Minnesota playing LSU in the Music City and Nebraska playing Utah in the Vegas Bowl. We'd be getting hosed in that scenario because the Music City is IMO a better bowl and we should be above Minnesota in the pecking order.