The Argentine striker is under contract at the Etihad Stadium for another 18 months but is determined to end his career with former club Boca when his days in Europe are up.
"I would prefer to return home, but it is very difficult because City won't let me leave for nothing.
"I will stay in Europe for another two years and then go back.
"Boca's president always says the door is open for me to rejoin them and I am dying to pull on their shirt once more.
"But I am under contract and have to be here in England."