Frankly, in the same way Beckham did quite a lot further along in his career, Ronaldo will in the short term, and a hell of a lot more in the long term, provide a lot of money with regards to advertising money, endorsements and world fan base appeal. Banks aren't stupid a £60million fee, with a couple million a year in interest will see them get £100mil or more back in return. A couple of banks might be stupid enough to not go for it, but plenty of banks will see it as a fantastic return and very very low risk. Frankly the Spanish, and Madrid government constantly bail out Real Madrid, as it makes them loads of money themselves in tourism revenue, tax from the club being run itself, tax on the gate reciepts, so Madrid would never ever let Real Madrid fold. Its an almost risk free profit in the tens of millions.
In other words, the banks aren't the problems, its the board, the proposal, the plan or that they aren't sure they can keep him for that long and if/when they sold him could get the same money back. Though frankly, people might be thinking he'll bounce everywhere, but Real Madrid is his boyhood team he watched all his life, people don't often leave those types of clubs(at least while they are still wanted).
Blatter, and Platini are complete morons, though they do have a relatively good reason for slight anti English feelings as Man U and mostly Chelsea are ruining the transfer market with ridiculously expensive player buying. Real Madrid did pay a lot of money for players, but while 47million for Zidane, pretty much unquestioned as the worlds best player at the time, and even now Ronaldo for 60mil as most people think he's the best, they wouldn't pay £22 million for a Shaun Wright Phillips, its chelsea buying lots of incredibly not fantastic players, for ridiculous amounts that have massively pushed up prices, and its English league wages that are pushing up wages everywhere. SO there is some reason to have an anti English club management vibe going on. Real madrids one ludicrous transfer every couple years hasn't done anywhere near the damage Chelsea did, or English wages have done to football in the last few years.