He is the most underrated Brazilian player in Europe.
Obviously he does not have the style of barcelona. It is a player that likes to play in 1 Vs 1 situation. Has good speed, dribble and good finishing.
In the Brazilian team he plays even better, since he has Brazilian DNA. I hope he appers in the 11 line with Brazil. (Bye bye Paulinho) Imagine a front line with Neymar, Coutinho, William and Jesus (Firmino and Douglas Costa on the bench) playing in the counterattacks against teams that enjoy possession of the ball (Germany, Argentina, Spain...). Madness!