Stealth National Championship

Let's say, for the sake of argument, that both Texas and TCU both win their bowl games, and, for clarity's sake, Cincy loses. Jerry Jones has a big stadium in Texas that won't be in use come January and money to blow. What's to stop him from inviting his state's two undefeated teams to play in a *wink wink, nudge nudge* "exhibition" game a week after the MNC game?