As a football fan and an admirer of Man. Utd. I believe Alex ferguson to be the greatest club Manager of all time, what he as achieved I doubt will be surpassed by anyone in the modern game.
I really do not understand grown men having hatred for a club or manager of another team.
Then you don't understand football rivalry! Simple.
Yes he's probably one of the greatest managers in the game. His trophies prove it. That doesn't mean rival fans have to like him or his team.
I support a team that is still hated and branded 'dirty' even though we have been out of the top league for a few too many years now. That's football. They still turn up to watch us though in hope that their team can put one over on us.
Now other supporters can look forward to the possible demise of a rival team. That's what football supporters do.