"This is very good news for us and I am absolutely delighted to welcome Mark Gonzalez to Liverpool as he is a player the supporters will like to see," Benitez told the club's official website.
"Mark is an exciting left winger who can cross good balls and beat defenders and he is a very good signing for us. He has a very good mentality as when I was talking with him he told me, 'I want to play for Liverpool'."