I remembered Baptista as well. I know, many mentioned him already, but deary me, he flopped at Madrid, then at Arsenal and I don't think he is doing too good for Roma either.
I thought he is the "Golden Ball" material back when he was at Sevilla. He suddenly turned into a very poor player.
Another one is Rafael Sobis. Real Betis, unlucky with Brazilians, put their entire transfer kitty for that summer, or may be for 2-3 summers ahead, and he turned out to be really really poor player. Betis got relegated, Sobis went to some Arab country, Saudi Arabia I think
Some pundits said Sobis will become next leader of Brazil. Yeah right, utter wank