"The club has done a lot for making this easier, they did a great presentation and that's why now I am allowed to play for Liverpool," said the Reds' latest signing.
"I went through a very bad moment but now Liverpool has appeared and I want to do my work as best as possible for showing that I still have the same ambitions as when I arrived in England.
"Rafa Benítez gave me a lot of confidence since the fist moment that I spoke with him.
"Personally I even got very surprised with the chance of being transferred to Liverpool considering that I haven't been playing since December 3rd at West Ham.
"Now a new page starts in my career and I want to again be the player that I was some time ago and fight for a place at Liverpool.
"I want to give my best to this team that has done such a big effort to have me in the squad.
"In addition to that I want to work very hard for Liverpool and for myself win a place again in the Argentinian national team."