Porto have signed teenage goalkeeper Raul Gudino on a ten-month loan from Mexican team CD Guadalajara.
The 18-year-old, who was a member of the Mexico side that reached the final of the Under-17 World Cup last year, will compete with four other goalkeepers for the first-choice spot at the club.
Gudino, who will join compatriots Diego Reyes and Hector Herrera in Portugal, saved two spot kicks and scored one of his own in Mexico's quarter-final against Brazil in last year's tournament.
The young stopper has never played in a top-tier match while at his proprietor club.
