The tempestuous Argentine went from hero to villain and back to hero again but fewer moves illustrated just how noisy the neighbours had become more than his reported £25.5m move after his loan stint at United.
The 'Welcome to Manchester' billboard ad, a tremendous piece of tongue-in-cheek one-upmanship, so infuriated Ferguson that he tried to unleash his hairdryer on a female City official in the Old Trafford tunnel after a derby. She was having none of it, and neither were this new version of City