The Argentine's current contract expires in June and is a target for Leonardo.
He told France Bleu: "Honestly, I don't even want to enter this debate, precisely because respect has always been present. And now is not the time to go into the analysis of the situation.
"Everyone in the football world knows each other. There is no disrespect, but today we really have to focus on our goal.
"There are a lot of matches to play, the concentration is total, we don't want to get into another debate."