Double deal for Baggies
West Brom have signed defenders Cristian Gamboa and Jason Davidson.
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Gamboa has completed his move after his work permit application was approved.
The Costa Rica defender, who had already agreed personal terms and passed a medical, joins from Norwegian club Rosenborg on a three-year contract.
A Football Association appeal panel granted a permit on Tuesday, and Gamboa is now confirmed as Albion's eighth close-season signing.
Gamboa, 24, can play at right-back or on the right of midfield and started all five of Costa Rica's World Cup games this summer.
West Brom had to wait patiently for Davidson to resolve a contract dispute with Dutch Eredivisie club Heracles Almelo.
Davidson, who played in Australia's three World Cup group matches, believed he had finished his contract with Heracles and had become a free agent.
Heracles, however, informed Davidson they had triggered a one-year option on that deal and he remained their player.
To get the deal over the line, Albion have paid an undisclosed fee for the 23-year-old left-back, who has signed a two-year contract, with an option in the club's favour for a further season.