In the away (and home) games against Dortmund he certainly looked like a 17M player. Not to mention a few others games he's played for us where he has shown some great dribbling, good runs/movement off the ball and decent vision. And how hasn't he shown enough so far? 2 goals and 4 assists, playing as a sub for our midfielders in his debut season isn't bad at all imo. Could have had more assists to his name if not for some shoddy finishing from our strikers in certain games.
I actually think our counter-attacking, which was non-existent before this season, has improved massively since the arrival of Bobby P (and Morata of course) there isn't many players on our team currently who can dribble, and take on/run at players at pace like him.
He obviously still needs to work on his finishing/goal scoring facets of the game, but he clearly has much more room for improvement as well.