Cristiano Ronaldo has handed Portugal a World Cup concern, with a thigh muscle injury set to keep him out of the friendly against Greece on Saturday, reports the Daily Mirror.
The forward, who won the Champions League with Real Madrid earlier this month, missed training with his national team on Friday after complaining about the problem.
Portugal head coach Paolo Bento is confident the Ballon d'Or winner will be ready for the opening game of the tournament against Germany, but is also preparing his options.
Bento is quoted as saying:
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.