Herrera is a big Real Zaragoza fan.
"I'm a little bit of a footballing romantic. You have to support your local team - always. My idols were Gus Poyet and Nayim. You can admire players from the biggest teams but my idols were from Real Zaragoza. They were my team, are my team, and will be my team always. You can change your wife, you can change your girlfriend but you cannot change your football team."