Reported Manchester City target Isco is on the verge of signing a contract extension at Malaga, according to the club's director of football Mario Husillos.Husillos added: "There are no sure things in football. Everything can change in an instant. "The club's intention and what Isco has stated is that he is going to stay here; he's going to renew his contract. "Life can also throw up a lot of surprises. That is the most conclusive statement that the club can make on the issue." Husillos admits it will be tough for Malaga to keep hold of Isco as his stock continues to rise and expects him to eventually join one of Europe's heavyweights. "Isco has really taken off. He's a great player and they want him at a number of clubs," he added. "He's a Spanish international. We intend to keep him at Málaga for as long as possible. "Everyone wants to improve and if he continues growing like this, he'll have to go to a legendary European club. That's understandable."