Isn't he banging them in again?
It's just the usual when a player has a drop in form. We see it here all the time when it's one of our own players.
He had a break out season where no defenders knew him, then suss him out in his second. He then has to work out another way of getting the better of them, and his form drops as a result. If he's managed to work out how to overcome defenders in a different way, then he's on his way to becoming a better striker.
I've looked at his stats for this season and he's bagged 11 in 20 appearances across all competitions, with 8 in 8 in Europe.
He's 21 years old, has only just turned professional and, unlike a lot of his contemporaries, hasn't had the youth coaching that they've had. All of which tells me that there is bags of raw, natural talent that, in the right environment, could see a gem of a striker develop.
No young player has a straight line trajectory, there's always plateaus, moreso when you're playing professionally.
He may fade away, but from what I've seen and read if him, he has a huge desire to improve and maximise the talent he has, so I don't think that'll happen.
I could be wrong of course, but I have a feeling that we'll be looking at him in a few years and wishing we'd pushed the button.