So Murder and Child Abuse (presumably you mean abuse with some sexual content) are a definite "no no" whilst GBH and ABH are, you know, merely a "Meh" on the scale of seriousness? Putting someone in hospital for weeks and permanently damaging their faculties is a definite "meh" in your book. Everyone should get a free hit at that during their early years. Not serious at all really. I mean, nobody died did they?
A couple of things to consider. GBH has a very close relationship to murder in that quite often a S.18 Wounding with intent will change to a murder if by mischance the injured party dies. In any event it carries a potential life sentence anyway, thus emphasising it is serious and not just "meh".
People can change, but they very rarely do if they are simply evil, bad, despicable or whatever other adjective applies to them. I'm a lovely bloke, but people who have known me for 40 years will tell you I am a miserable depressing twat with a vicious temper who can "kick off" at the drop of a hat. It's my personality. Madine didn't just make immature mistakes, he was and is a 6ft 4inch bully (which is why we are signing him) who has history even up to 18 months ago of violence to others especially when drunk.
My view is that he is another Evans. An unintelligent, over indulged, overpaid, classless, arrogant individual who cares nothing for other people. IMHO.
However, having said all that, does it preclude him from playing for Sheffield United FC? Regrettably not.