I'm not sure whether you think this is fair or not 20's, but here goes.
For me... Bowler could get away with some of his slightly rough edges at Blackpool and play with a sense of freedom and maybe without some of the responsibility that might otherwise be expected of someone in his position (particularly as you move up the levels). There's no question that his decision making could be hit and miss over the course of a season and that he did lose the ball in dangerous positions as well as perhaps leaving us exposed defensively.
I think at our level, we were happy to accept the many positives that came along with the player and also focus our attention on his ability and the excitement that came with such a gifted player when he was running with the ball. However, football in general, particularly the higher up you get, doesn't really make too many allowances and whilst there is an obvious desire for players with the kind of skill and ability on display from Bowler, there is also a requirement to try and contain that ability within a framework of expectations.... OK, If you're as good a player as Ronaldo, then perhaps you are going to be given more leeway, but Josh isn't anywhere near as good as Ronaldo, and certainly at Premier League Level he is going to need to round off many of those sharper edges pretty quickly... He will need to track back and defend, he will need to sharpen up his decision making, he will be expected to deliver better quality balls into the box and I'm not sure that in confining him in that way, that essentially you just ruin the player that he is.
So for me, he's a player who will shine at our level, but who I tend to think might well flop completely in the kind of constrained role that he will be expected to play if he ever manages to break into a side in the Premier league.... Alternatively he may find himself simply being used as an Impact Sub in the last 20 to try and open up a defence and win a game perhaps.