The 20-year-old has caught the eye as Manuel Pellegrini's side have reached the last 16 of the Champions League.
"My head is here and my future is in the hands of Malaga," Isco told Canal Sur Radio.
"If the club decide to sell me because they need the money, I cannot do anything. I don't have a say there.
"But hopefully I can stay here for many years. That is what I want. I am really enjoying it here."
Isco has scored 10 goals in 27 appearances for Malaga this season.