I'm sure he'll start banging the goals in at some point. We get so much more from him though. His attitude and work-rate will take him to the very top. It's totally understandable that a 20 year old will have some fluctuations of goal-scoring form - but regardless, the way he continues to play really benefits the team in so many ways. And it's not like 10 goals and 5 assists this season when he's largely alternating game-time with Aguero is that terrible anyway.
This is great news and well deserved for the lad.