I can't tell you how bad he is, but I can tell you the bunch of factors that have conspired to get him in fish out of water territory.
Modern elite (protected financially) football clubs have this idea that it doesn't much matter how much you maximise the squad..... Because you are so far ahead of your direct local competitors that you can just get elite youngsters, develop them, sell them for more money, and still retain your protected position.
This is a business level decision, based on stats, more than on football. Now a football person knows that you need a core dressing that knows the level, have appropriate standards to instill in new recruits, and provide those soft coaching pointers (normally delivered hard) to compliment the formal tactical and man management at the coaching level.
So coming into a piss weak group, off the pace of the level, with a coach who knew where he was coming from but still not acclimatised to where he was landing, he brought his one major physical attribute and one pattern of play. Which really didn't fit what that team needed at all to succeed.
Is he completely useless? No. Has he adjusted to the level? No. Does the team he has landed in have the knowledge to improve him, and use his attributes? No.
It was always likely to be a bit of a disaster. Manure are still playing old school football badly, and not much has gone right in a decade. What was anyone hoping for from the kid?