As you will see from the quote, he could have just said "No."
“It’s not something I think about. New Japan is far superior to WWE when it comes to the quality of the roster and the quality of the matches. One thing I will say is that I do pay attention to what Finn Balor, AJ (Styles), and Shinsuke Nakamura are doing, and they look like they’re having fun. I might want to wrestle them again someday, but I might want to do that in New Japan. Hell, I might want to be like some other people and become a movie star or join the UFC. You never know.”
Balor, Styles and Nakamura came to WWE in the past few years, and all have enjoyed early success with the company.
NJPW loyalist Okada has had a hell of a year, including a trio of brilliant matches against Kenny Omega and remains the IWGP Heavyweight Champion.
You can read the entire interview at this link.