Cristiano Ronaldo will sit out his side's friendly against Mexico tonight as he continues to battle tendinosis around his left knee and a thigh injury, the Portuguese federation admitted yesterday.

Midfielder Raul Meireles and central defender Pepe will also sit out the match in Boston.

"They will maintain the programme pre-established by the medical department for their injuries, with specific work in the hotel and some sporting interludes on the pitch," said the FPF's daily medical bulletin.

Ronaldo has yet to take part in a full training session with his fellow team-mates since joining the Portugal camp one week ago and also missed last Saturday's friendly with Greece.