Why can't he go anywhere else BUT Real Madrid if he leaves. It is not the end of the world if we don't get him, but I would hate to see him in Madrid, playing against us.
But he is the perfect RM-signing, and circumstances is in favour of a transfer to them (if any):
1) RM-ban, so they have to spend big now because they can't later on
2) They can sell James/Isco/Kroos to afford the massive fee (they might not have to spend if they sell two + saved their combined wages)
3) Wouldn't mind breaking record-fee, just creates more publicity and hype around RM
4) He is marketable as f*** and therefore a perfect RM-player.
5) He has the skill-level to strengthen their team.