 It was reported during the summer 2011 transfer window that La Liga club Real Zaragoza wanted to sign Barrera, which would have re-united him with ex-Mexico national team coach Javier Aguirre.On 25 August 2011, Barrera joined Spanish club Real Zaragoza on a season-long loan, which would reunite him with former Mexico national team manager Javier Aguirre and teammate Efraín Juárez.He scored his first La Liga goal for Zaragoza in a 2–2 draw against Villareal.