There's to me only 3 teams that really has to move. That's the Raiders, Rams, Jaguars.
The Raiders make perfect sense in LA. The heart of Raider nation is still in SoCal. Whenever they play the Chargers in SD, Raiders fans always fill the stadium, but I don't think the league trusts the Davis family with their last chance at LA. Let's see what happens.
The city of St. Louis is truly a one sport town. Rams get no love, I can see them heading to LA, maybe more than Oakland. Especially considering the fact their owner owns chunks of land that being looked at to build a stadium their.
I know the Jaguars to London is always what's being brought up, but I can really see them being the ones that head to San Antonio. It makes the most sense. They can keep them in the AFC south, and they can make a state war rivalry with the Texans, in what's probably the most dullest division in football.