lol it was hardly a "chance" Barca took hon him. They knew he was special and that if all went to plan, he would be a star. Barca didn't pay for his medication out of kindness, but rather to help him develop as a footballer to benefit FC Barcelona. And Barca has had 20 years of benefit from this kid, and he has benefitted also. It's been a great partnership between the club and player for all of these years.
How often do 12 year old wonderkids turn out to be the real deal? Not very often. At that stage in his development, it was very much a gamble to invest so much in him; especially when he had a hormone deficiency.
Besides my question was pretty much dumb, even if he played for free Barcelona would still be above the salary cap and thus his registration would not be legal. There was nothing he or the board could do.