And it was Joachim Low’s side who beat Argentina in the final in Brazil four years ago.
Diario Gol say Ronaldo has learned Messi has an agreement in place with Barcelona’s Ernesto Valverde.
They have reportedly agreed Messi is able to choose which games to compete in - and which to skip.
Ronaldo is now supposedly set to do the same.
The former Manchester United star will prioritise the Champions League - a tournament that will determine the future of Real boss Zinedine Zidane.
And he hopes that can be the ticket to him thriving for Portugal in the summer.
Meanwhile, former United coach Carlos Quieroz has praised both Messi and Ronaldo with the World Cup creeping up.
"[Cristiano Ronaldo] is the best player in the world," Queiroz, said.
”I’ve always said that Messi is an extraordinary player, he's out of this world.
"If he were human, he wouldn't have had that magical moment [against Iran at the 2014 World Cup].
Invalid email
We use your sign-up to provide content in ways you've consented to and to improve our understanding of you. This may include adverts from us and 3rd parties based on our understanding. You can unsubscribe at any time. Read our Privacy Policy
GETTY
Barcelona news: Messi is currently on international duty with Argentina
"I don't usually like losing, but I didn't come away from that defeat with a negative feeling.
"It's when something magical like that happens that you know that football is alive and kicking, and that's why it's one of the best sports in the world to watch.
"It's even more of a special moment when it comes from a player who shouldn't be allowed to play by FIFA until it's proven that he's actually human!"