No sources, just scuttlebutt.
OU is a blue blood and can pick their landing spot. OKC isn’t huge, but is a market and it also solidifies Dallas with so many OU grads there.
If OU doesn’t have to take OSU, they want the B1G. If it has to be a package deal, then it probably means the SEC since OSU wouldn’t be a fit at all in the B1G or PAC12. FOX wants B1G and OU is aligned with FOX. Also, the OK State govt has cut Higher Ed funding enough to where OU may not be as worried about their threats.
Kansas also is rumored to want out and the B1G wants them for Basketball. This may happen whether or not any other moves happen. If the B1G doesn’t land OU or UT, UCONN could be a target to pair with Kansas.
Texas basically has their choice after that with the caveat that they may have to ensure that Tech (and probably UH) land in good spots. They supposedly want an ACC deal like Notre Dame has where they go independent and join the ACC for all sports. This would make ESPN the happiest as it gives a boost to the ACC Network and would allow them to fold the LHN into it However, the ACC probably won’t take Tech as they aren’t a fit.
Texas may go B1G with Kansas, but they’d be giving up a lot and that may make ESPN unhappy since the B1G is more a Fox property now. Also, Tech and Houston aren’t fits.
Texas could go PAC-12 and probably bring Tech, Houston, and TCU with them giving the PAC 12 network the Texas market which they so badly need. ESPN could also entice the PAC12 to move away from Fox if need be.
If UT, OU, and KU all leave with no other movement, it’s likely that the Big 12 will add from the candidates they brought in last year. The question is whether they’d maintain P5 status. Supposedly, if they allow those three to leave early, a deal would be made to allow P5 status for a set time.
There’s also the possibility that they go to 4 conferences of 16 or 20. If 20, we probably get in. If 16, a lot will depend on Texas politics, but we’re likely on the outside looking in.
Again, just scuttlebutt. Main thing that continues to be said is that expansion is dormant until 2020 at the earliest.