Deportivo Toluca F.C.
Subsequently, Farías returned to his country and joined Club Atlético River Plate, being crowned top scorer in the 2006 edition of the Copa Libertadores at five (tied with 13 other players) as the Buenos Aires side reached the quarter-finals. In late July 2007, after a failed transfer to Deportivo Toluca F.C. for personal reasons, he signed a four-year contract for FC Porto in a €4 million deal.