AS is reporting that Isco has told his "inner circle" that he wants to finish out the remaining two years of his contract at Real Madrid. There's been a lot of talk about selling both Isco and James come summer.
Unless he pulls some great form out of the remaining matches in the season, I don't think leaking to the press "I want to stay" is going to help. Honestly, I don't see his form improving or him convincing Zidane to keep him.
He can talk all he wants, but in the end the Club is going to do what's best (sometimes) for the club. Also in the article is a bit about how Manchester United and Juventus are interested in his services - so there's that. If Isco can recover his good form Real Madrid should definitely keep him, but nobody knows whether or not he'll be able to do that.