That would violate his contract, and I think the KBO and NPB have an agreement that suspended players aren't allowed. He would have to retire from MLB.
He made a horsefeathers ton of money with nothing more than a slow-mo camera, spin rate data, and his secret cure (Spider Tack.) Spincinnati indeed. I respect the hustle actually.
I went to the Trop in 2019 and spent parts of the game in about 6 different sections. Security didn’t give a horsefeathers except for some of the lower level sections right behind the plate. Same. Bought 10 dollar tickets and ended up sitting front row next to the 3rd base bullpen.