Doesn't look like the Big 10 slot will be avail (read: Music City)
With yesterday's wins by Purdue and Wisconsin, the BIG 10 will finish with 7 eligible Bowl teams (if you count 6-6 teams)
OSU (13-0), Iowa (11-1), UM (9-3), PSU (9-3), Minn (7-5), Wisc (7-6), Purdue (6-6). The Big 10 has 7 bowl tie ins, with the Music City getting the 6th and Motor City getting the 7th.
The rub here however is that the Big 10 will in almost 100% certainty send 2 teams to the BCS - OSU and Iowa. That would leave 5 teams to fill 6 slots.
As the Music City and Motor City pick 6th and 7thy, it is conceivable that the Motor City could get the remaining Big 10 team, with the Mudic City's permission. That would allow the Music City to get someone else.
HOWEVER, the Music City supposedly just signed a contracty with the Big 12 - this would allow the Music City to take any of the possible .500 Big 12 teams (the Big 12 has 7 bowls, 7 teams over .500 and hence bowl eligible already, and 2 teams - Ok St and Texas A&M - who will finish no worse than 6-6).
So it's in the cards that the Music City will get either Ok St or (probably they hope for) Texas A&M.
The Music City could have signed with the ACC instead, but then they'd probably get Tech or Wake, and they obviously opted with Ok St or A&M instead.
As mentioned, the SEC slot may be open if Ole Miss loses to Miss St on Thanksgiving SEC has 7 bowl tie ins (Sugar, Capital One, Outback, Peach, Cotton, Independence, Music City), and 6bowl eligible teams in UGA (10-1), UF (8-3), LSU (8-3), AU (7-4), Ark (8-3) - UK (7-4) and Alabama (9-3) are not eligible. In the SEC pecking order, Music City picks 6th and Independence picks 7th