Finn is a world class talent, has an unwavering work ethic and is a consummate professional. You can plug him in almost anywhere & unless you actively sabotage him, he will work. You'd be a fukking moron to not resign a guy of that caliber.
Unfortunately for him, the main event scene is crowded at the moment and they've got guys they've invested a lot of time and stories into that have dibs ahead of him BUT he had a very credible story of his own that got some real run for the World Title. That's a thread that was never resolved and they can return to with no problem, World Champion that never lost is a layup for crowd investment given TV time and consistency.