For that reason precisely.
Ferguson never really goes buying top up and coming South American talent. Fair enough, we have Rafel, Fabio and Rodrigo, but none were bought for big money. None were playing for their country or even for their clubs at this stage. The only player he did buy from South America for a decent amount of money was Forlan.
We are never really linked to any real up and coming player, even ones that a rated extremely high. Look at all the players that have come over to Europe in the last few years that were so highly rated yet we were nowhere near them: Sergio Agüero, Robinho, Higuin, Kaka, Mancini, Pato, the list could go on. Buying players for big money is something SAF just doesn't seem to do. He seems to like spending inordinate amounts of money on players based in England.