Other teams, including Cal and Stanford. IMO, whoever threw out UW and OU being vetted did it to send a message to the other pac schools related to internal negotiations over how to divide the money. Given that nothing has happened from either CU or UofA, I want to believe that they are just posturing as well.
The big 12 would take ASU in a heartbeat. They are a better brand than UofA and have a much bigger following in the Phoenix metro area. Yet ASU is reportedly sticking with the Pac. That tells me that ASU does not think that the conference will disintegrate and they would only think that if they believed that all four schools were staying.