Nebraska will never rejoin the Big 12 and no other Power 5 school will ever join the Big 12. Nebraska is finally going to be fully vested in the Big Ten after next year, I believe, and will make nearly $60 million a year just on TV money.....why would they walk away from that? This whole ridiculous story comes from some sports talk radio host in Salt Lake City looking for an audience and clicks.
And even if Nebraska were to rejoin, they don't really solve any of the Big 12's big problems with population, TV markets, recruiting base, demographics. Finally, the so-called radio host hinted at Oklahoma leaving and Nebraska taking their place. I would imagine only the slightest, tiniest reason Nebraska would ever want to rejoin the Big 12 would be to play Oklahoma again, if the Sooners are reportedly out, no way do the Huskers join up.