Now to start off, I have used many 'top tier' CM's this year ( Kroos, Isco, Fred, Eriksen, Paulinho) but I can assure you that this guy is the best of them all. Absolute beast. I use him as the LCM in a 4-1-2-1-2 (2) and he absolutely controls both the midfield and attack. He is incredibly solid going into challenges seeing as he his very tall and has an OK defensive statistic. Not only does he solidify your midfield, he also provides so much for your attack. His finishing for me was unrivalled for players in similar positions and his long shot's were absolutely unbelievable. He is one of those players that, when you have no other options, bombs up the pitch and makes a perfect run to either finesse it or just drill it onto the bottom corner. HIs 4* 4* combo makes him deadly from the edge of the box because if he is in a difficult situation he either has the ability to shoot with his weak foot or just do a quick turn and utilise his 4* skills. His passing is emphatic and he will rarely miss the intended target. Overall, for 30k, the best CM in the game for the money and if you are on a budget, go out and get this guy. He isn't even that difficult to fit into a team due to him being Brazilian.
4* weak foot
Possibly stamina. But to be completely honest with you I didn't really notice it to be that much of an issue.