Argentine goalkeeper Romero joins Man Utd

Argentina's goalie Sergio Romero makes a save on Jamaica's Je-Vaughn Watson during their first round Copa America 2015 soccer match at Estadio Sausalito in Vina del Mar, Chile, June 20, 2015. REUTERS/Rodrigo Garrido

(Reuters) - Manchester United have confirmed the signing of Argentina goalkeeper Sergio Romero on a three-year deal, reuniting manager Louis van Gaal with a player who helped bring him a Dutch title but also caused him World Cup heartache.

The 28-year-old, who played under Van Gaal at Dutch side AZ Alkmaar, joins United as a free agent after leaving Sampdoria at the end of his contract.