He's 20 and has just averaged less than a goal every 4 games in the Championship. Chances are he isn't making it here . Not everyone can and will do a Harry Kane.
From what bit I've seen of him he's a decent finisher but has a very basic overall game. But being a decent finisher is surely the least you would expect from any striker at any level.
The article just said football’s development isn’t linear.
Come back and let me know how Jamie Vardy and Didier Drogba were doing age 20. Probably called decent finishers and that’s about it. But they were willing to learn and improve I bet. And both had PL careers that went into their 30s.
He’s got time on his side if he gets his attitude right.
And people were writing Kane off as a spurs player at 20. (Not that we should expect Troy to be another once in a generation footballer either).