Striker Pauleta Resendes, who scored the only goal in Paris St Germain's French Cup final win over Chateauroux on Saturday, trained with the squad for the first time on Monday at their base in Obidos, 80 kms north of Lisbon.
He was joined in the session by Maniche Ribeiro, Francisco Costinha, Paulo Ferreira, Deco Souza and Ricardo Carvalho, who all helped Porto to their Champions League final win over Monaco last week.
Valente, who was also part of that team, is trying to shake off a slight injury to his left leg.
"We know we're going to have hard games but we have a good group of players," said Manchester United winger Cristiano Ronaldo. "We have a lot of chances to go a long way. That's what we're hoping for."
Portugal beat Luxembourg 3-0 on Saturday and play their final warm-up game against Lithuania on June 5.
The hosts get Euro 2004 underway with a Group A game against Greece on June 12 at Porto's Dragao stadium before playing Russia and Spain.
