He certainly turned up his game in the second half and contributed with the assist and the nice goal but overall he is still not performing that well, comparing to what I saw before earlier in the season. As I mentioned earlier, two things that kill me, one is he is getting dispossessed way too easily and way too much, he should learn to shield the ball better and try more with turns etc., and the second thing is he tends to make questionable decisions, ie, when to pass, who to pass the ball to, when to shoot etc. He does better on the right wing and tends to be more invisible in the midfield.
I think he should definitely stay at BVB for one more season to sharp himself up.