There is no link to prove this as a “fact”. I believe Kaplowitz has said this was the case or had been told so. Kap also said that Senter tried to get into the Sun Belt when they plucked CUSA in 2021. There is also no evidence of that. Doesn’t mean it didn’t occur.
From what I remember, this was during the time Boise and SDSU were going to the Big East, which was in late 2011. In early 2012, the MWC and CUSA were going to merge, but decided not to, and then added their own expansion teams in May. It was during this time that Stull was allegedly approached by the MWC, but “wanted to remain with Texas teams”.