Deion has said multiple times he would not be interested in coaching Dallas. And even if he wanted to. Jerry will offer him peanuts-while Deion wants diamonds. Not going to happen. IMHO
The fact that this is trending while the playoffs are going on is why Jerry might do it. Jerry craves attention more than anything and Deion brings that in spades.
I can see it now. Jerry tells Deion they'll draft his kid at 12. They take him, ride Dak out for one year to clear the cap and have him waive his trade clause in frustration, and then turn it over to the nepo baby.