Another outside the box idea for him.
Going full Kremlin might be too much for his brand to absorb, but perhaps he could move to Hungary and start a European fascist network. He would certainly be welcome there. That leaves him a path to return to the US later which I think going full on Kremlin would preclude.
Yes, I'm serious.
Tucker Carlson Has Seen the Future, and It Is Fascist (nymag.com)