Real Madrid captain Raul has come through a fitness test on a niggling hip injury and will line up against Porto in the Champions League.
Real, who opened their European campaign with a 4-2 win over French side Olympique Marseille, will be without England captain David Beckham, nursing a foot injury.
And French star Zinedine Zidane looked less than fully-fit in last weekend's 2-0 defeat at Valencia.
But defender Ivan Helguera is back after a fortnight out with a knee injury to face a side Real consider their biggest rivals in Group F.
"Porto are one of the best sides in Europe, they're playing at home and will be going all out to beat us," said Brazil World Cup star Roberto Carlos.
Real's away record so far this season has upset coach Carlos Queiroz. They have lost twice, won one and drawn one.
"I can't accept us playing better at home than away," said Queiroz.
But the UEFA Cup winners, held 1-1 at Partizan Belgrade in their opening Champions League match, fear a Real backlash.
"Real have just lost so they couldn't be more dangerous," said Porto coach Jose Mourinho. "But we'll be really motivated."
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