"I'm very happy here. But we'll have to see what happens about the future," said the Argentinian international.
"At the moment, I'm just concentrating on what needs to be done, making sure that we finish the season strongly.
"Hopefully we can achieve something very important by winning a European title. There's still a long way to go and hopefully we'll put in a good performance on Wednesday to make sure we are in the Champions League semi-finals.
"Then next season, we'll see how things are going but I'm relaxed and very happy here with Liverpool.
"It's good to be in a dressing room where there's a lot of Spanish spoken but at the same time, we try to speak in English because we're in England and we have to respect that fact."