 On 24 November 2009, Vargas scored a critical spot kick goal that advanced Fiorentina onto the knock-out stages in the UEFA Champions League.This was the first time Fiorentina made it to the round of 16 in ten years.On the last day of the August 2012 transfer window, Vargas joined Serie A club Genoa on loan for the season, making 20 appearances before rejoining Fiorentina.