Milito said today that he thinks he will stay in Inter next year too even though he received some important offers.
I guess the important offer came from Mourinho to join him in Real. In any case, even if Milito wants to stay in Inter, he leaves space for a potential transfer. Now it depends on Moratti and Real. If Real make a high offer that Moratti won't refuse, then Milito won't say no to that. If Morati wants to keep him, then Milito will gladly accept that.
But he'll ask for a better contract, surely. With 3m eur a year, he's among the worst paid players in Inter and he gets 7.5m eur less than what Eto'o is getting.