I think this lad looks class for his age and there's no way he will stay at Brighton.
Personally, I don't think we've room for him though. Haaland is simply the best striker not just in the world, but probably for the last decade if not more. He will win multiple Ballon D'Ors. Even if he got injured, Alvarez is more than a suitable understudy.
I think he's likely to end up at United or Liverpool, maybe Chelsea. He's definitely a very, very good player but sadly for him he won't be needing a very big trophy cabinet! :)