Right now there is a huge talent drought in Brazil. Very few interesting young players. But a few of them could be interesting, and not very expensive, since they aren't overhyped (yet):
Doria - CB - 18yrs - Botafogo - everybody here knows him. Was about to move to Juve. Will be at least a solid CB in his career.
Mayke - RB - 19yrs - Cruzeiro - best RB of the league so far. Strong, fast, good cross.
Alex Telles - LB - 20 yrs - Gremio - best LB of the league. Similar to Mayke, but defends better and has a wicked left foot to shoot or cross.
Walter - CF - 21yr old - Goias - he's the best striker of the league. High IQ, wicked left, good goalscoring instinct. And a fat fuck.
Everton Ribeiro - 24yr old - AM/W - Cruzeiro - by far the best and most talented player of the League. He is beasting during the whole year. Would fit as a glove in Juve's squad. Natural AM or RW/LW. Very quick, great dribbling and finishing skills. Intelligent player.
Abner - 17yr old - LB - WC potential.
Now a few young kids from Fluminense that I know very well and people don't really know them yet - huge potential, all of them:
Bonilha - 17yr old - CM/DM - tall, elegant, classic CM. Great passing and vision.
Igor Juliao - 18yr old - RB - very talented kid. Great speed, crossing, dribbling. Must improve defense. Already in the professional squad. Huge potential, low cost.
Gerson - 17yr old - AMC/AML - tall, amazing talent. Classic AM. Left footed, quick, can dribble, intelligent, can score and assist. This kid will break through soon.
Robert - 17yr old - AMC - also awesome talent. Very intelligent, great passing, classic AMC. Tall and strong.