Former Manchester United boss to teach to execs at Harvard Business School . Ferguson retired last May after claiming a 13th English Premier League title with United -- the 49th and final trophy of an illustrious 39-year career in football management . Ferguson will take up residence there in 2018 . The 72-year - old is the most successful British football of all time winning 22 trophies .
Former Manchester United boss to teach to execs at Harvard Business School . Ferguson will take up residence there in 2018 . The 72-year - old is the most successful British football of all time winning 22 trophies .