This may not be something to expect by everyone, but what if GOAT backs to the european club again? I will be happy to see him play in the europe, in a big club. The only question is that will there be a team that sign 40 years old guy to play?
Ronaldo is a very good player even when he's at his age, but paying big wages for 40 years old is kinda unaccetapble. If he will accept to reduce his salary, there may be a club that will be interesting enough to sign him.

It seems he's being obsessed to play in the club world cup, and still try to find a way about how to play in that competition.

Moving to the club that qualify for club world club is one of ways.