Melo just isnt/wasnt that good. He had one wonder season at Fiorentina (which still didnt come close to Vidal's 11/12 season with Juve) and was just not the right fit for our club at the time. The fact that the worm known as Secco paid 25M for him is all the more annoying. He was a decent midfielder capable of really good games every once in a while, but too prone to brainsnaps and stupid decisions. His 09/10 season was just fucking horrendous, some of the worst performances I've ever seen from any player in our jersey.
Vidal and Marchisio are both superior players. Good riddance to the crazy Brazilian, but the Turkish league is clearly his level.