The Portuguese attacker is nursing an injury and could well miss his nation’s opening game in Brazil.
The current Ballon d’Or holder is fresh from winning the Champions League with Real Madrid – however, he could well be set to miss Portugal’s first game of the World Cup against Germany.
National coach Paulo Bento has revealed that CR7 will sit out tonight’s friendly against Greece and faces a race against time to be fit to face the Germans.
“He will be with us but he will not compete,” Bento told reporters, published in The Daily Mail.
“What I don't want to do is put any sort of pressure on a player that causes them to compete when they are not in a the right state to do so.
“We're not setting any deadlines. The player's well-being comes first. I want him to be in the best possible form without running any risks.
“We must have a team that compete with the players who are usually the first choices and can compete with players who maybe aren't among the first choices.”
Ronaldo played a key role in getting Portugal to the World Cup, scoring a hat-trick against Sweden in the play-off to make Brazil.
He has missed plenty of Real Madrid games of late due to injury but played all 120 minutes of the Champions League final.