For so many years, Manchester United did not only look like a club making mistake after mistake, but also a club who had no interest in learning from those mistakes. A constant and always-baffling tendency to back a new manager heavily and then tighten the purse-strings just as progress appeared to be on the way. A drastically flawed transfer policy which appeared to focus on how many shirts a player would shift rather than how he would fit into the coach’s tactical set-up. A self-defeating tendency to be bewitched by big names and big reputations. Constantly going for the short-term option an…