Full disclosure...
My in-laws have an apartment in Benalmádena, we go down there a fair bit. I have a scenario whereby I'm strolling along the promenade, bump into Isco, we go for a caña, chat Spurs and Spain, become best buddies...
Seriously tho, signing him is not as massively far-fetched as you may think. Madrid tend to sell cheap. Yes, Zidane's a fan but Madrid have to be seen to be continuously buying the latest, shiniest toy in the shop. They'll mainly be in the market for a new striker, someone like Aubameyang, but skillful ball-playing central midfielders have a far higher cache here than in England, in general, expect to see Madrid and FCB looking to buy in that department. The talk here is that Isco wants guarantees of a pretty-much guaranteed first team spot, he's unlikely to get it. Plus wages could well be affordable, he's a low earner at the minute, £38,000 after tax or thereabouts.
Sorry to stray off-message re the definite article debate. For what its worth we're always El Tottenham, Los Spurs in Spanish. Most teams carry the masculine article here (el Madrid, el Barça, el Málaga), the exception being Real Sociedad. "Sociedad" is a feminine noun, so they're "La Real", informally "La Reala". Cool eh?
YIDS