The Argentine international is currently focused on next month's World Cup but has hinted that he wants to return to Boca Juniors and could do so this summer.
"My season personally was good in England but I did not win any titles and that is disappointing.
"For me, this year was special. My challenge was to be consistent and arrive at the World Cup in perfect condition.
"I am convinced that South Africa will be my World Cup. I am now determined to put in the maximum effort and fight for my place in the starting XI for Argentina.
"Argentina are well prepared to be World Cup champions. There is no-one I would rather play for. When I play for Argentina, I play for the shirt and never the money."