Iconic former Red Devils manager Sir Alex Ferguson caught a Manchester United legend by complete surprise after he delivered one of his infamous ‘hairdryer treatments.’ Sir Alex Ferguson, who is widely considered one of the best managers in the history of football, called it time on his legendary career at Old Trafford in 2013. The 82-year-old Scotsman led Manchester United to their last Premier League trophy in the 2012-13 season before he bowed out of the club as manager. Ferguson had a sensational impact at United – and football as a whole – during his time in the Old Trafford dugout, inclu…