The 29-year-old forward has just recovered from blisters in both his feet that forced him to leave the pitch at half-time in Brazil’s 4-0 victory over New Zealand last Saturday.

“Ronaldo woke up today with a fever, so he didn’t train with the team and is currently receiving medications,” the statement said.

The 2002 World Cup top-scorer, will be looking to make up for his tough season at Real Madrid as the club failed to win a trophy for the third successive year.

Ronaldo is expected to be fully fit for the team’s inaugural World Cup game against Croatia on June 13th.