Manchester United may have turned their attention to free agent goalkeeper Sergio Romero to replace Victor Valdes, meaning De Gea may remain at Old Trafford. Manchester United have confirmed the signing Argentina international Sergio Romero on a three-year deal. The goalkeeper heads to Old Trafford on a free transfer after his Sampdoria contract expired at the end of last season. "I am absolutely delighted to join Manchester United," Romero told the club's official website. "To play for the biggest club in the world is a dream come true for me.