Legendary former Manchester United manager Sir Alex Ferguson admitted that he refused to answer back to only one influential person in the world. Manchester United legend Sir Alex Ferguson, who is widely regarded as one of the best managers of all time, called it time on his illustrious coaching career in 2013. The 82-year-old iconic Scotsman bowed out of Old Trafford after a remarkable 26-year reign, which included leading United to their last Premier League title. Ferguson enjoyed unbelievable success during his time at United and achieved incredible feats, including leading the Red Devils t…