He is using a lot energy closing down defenders but he isnt making the same runs off the ball like when he first came to the club , he is only a kid and will have ups and downs and its obvious Pep loves him because he hasnt had a decent game for a few months and is still getting plenty of game time. Sterling , Kun and Sane should be the regular starters up front at the moment , like a few Brazilian players i think the Premier league can be a bit of a slog for them , after his exertions in the World Cup and taken his age into consideration i would send him somewhere sunny for a couple of weeks to recharge his batteries , because in his current run of form we wouldnt miss him.