Right now it is unknown whether WWE will renew Paul Heyman’s contract. It’s likely that they could sign him just in order to keep him away from competition, however they may not have the money to do so. Heyman has a screenplay he’s shopping around, a TV show idea, he’s been approached by an MMA company, and there is also talk of him doing some sort of internet show.
If his contract does not get renewed, it’s almost a sure thing that he will get a call from TNA. Whether he would want to go or not, and whether certain people within TNA would want him there or not, is a different story.