Ever since Daniel Bryan's retirement from in-ring action in WWE, there has been speculation about him possibly wrestling again in the future once his WWE contract expires. There have been rumors of him wanting to wrestle in Japan, specifically for the New Japan Pro Wrestling promotion.
However, Dave Meltzer of The Wrestling Observer Newsletter recently reported that Bryan may not be medically cleared to wrestle for New Japan, as they apparently have a similar policy as WWE when it comes to concussions. Meltzer stated:
"If you have a concussion [in New Japan] it’s the same thing: they keep you out, there’s no questions asked, and they don’t put you back in until you pass the testing. Now, do they have the same stuff as they do here? Our stuff, we use the stuff that Joseph Maroon did with the impact testing, and whatever they do [in Japan] is probably the same. But when guys have concussions in Japan they’re usually out for a while."
That's not to say that Bryan couldn't wrestle elsewhere, but he is rumored to have his heart set on wrestling for New Japan at some point if he does end up leaving WWE once his current contract expires.