Sir Alex Ferguson isn't short of a bit of wisdom. Given that he managed for a total of 39 years - 27 of these at Manchester United, where he was battling for silverware - he has pretty much seen and experienced it all.
In 2015, two years after he retired, Ferguson released his book entitled Leading, which provided an incredible insight into the man.
One passage reflected on what it means to be a top boss, and why, sometimes, things just don't work out. Ferguson summarises by explaining that a manager's greatest strength is the support of his dressing room as without it players won't fight for you. "There is a phrase in football about players 'not playing for the manager', which I have seen happen a thousand times," explained Ferguson.
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