With the non 4 corner school tidbit, it really makes you look at the B1G and think which 2 of the below teams the B1G would be most interested in, why, and if they told the others they are not making it.
Oregon
Washington
Stanford
Cal
With what the B1G looks for, what fits them the best with their media deal, what works best for USCLA, and what would be a possible move to further entice ND some things stand out.
Of this list Oregon may be the least desirable for the B1G.
Washington, better academics, solid athletics, Better media Market
Stanford, elite academics, solid overall athletics, especially beyond football, and ND rival. Media market
Cal, elite academics, marginal athletics, but also appeases California BOR, with UCLA. Media market
Oregon, great Football, lots of support and fans, but overall looking at the others is not in the same league beyond football. Academics not near the others, and on the bubble of losing AAU.
Most think Oregon is the best of this list, but for the B1G, they might not be.
Personally I think Oregon, may be that other school, Stan and Cal would not come to the B12 unless it was absolute last resort. And both are a better partner with Washington, UCLA and USC. Ultimately I think the B1G would only take one of Stan or Cal, at this point.