(if Oregon/Washington aren't taken by the B1G - if they are taken, then goodbye PAC)
Both the Big 12 and PAC 12 are currently negotiating new deals
If ESPN tells the PAC12 they'll get $X M if they add Oklahoma St, BYU, Texas Tech and Kansas
And ESPN tells the Big 12 they'll get $Y M if they add Arizona, Arizona St, Colorado and Utah
If X > Y then the most desirable Big 12 teams will go to the PAC12. If Y > X, it'll be the other way around