Maybe be part time for WM season then written off?
I hope they write him off entirely though. I hate the "reality era" where people just get announced as being out due to injury or whatever. What happened to someone getting beaten down, run over by a car, getting suspended? Better than some .com announcement.
Maybe if he is written off soon, we have Mysterio vs Rollins in a Careers vs career match? If Rollins wins, Rey retires and Doms career is over before it gets started. If Mysterios wins, Rollins is gone