Former Manchester United manager Sir Alex Ferguson dropped incredible advice for a Premier League legend who suffered a major setback in his managerial career. Sir Alex Ferguson is widely considered one of the best managers of all time and the Manchester United legend had a prolific impact both in Scotland and Wales. The 82-year-old Scot achieved incredible success at Aberdeen, including leading the Scottish side to the European Cup Winners’ Cup with a famous win over Real Madrid. Following his successful spell in Scotland with Aberdeen, Ferguson arrived at Old Trafford and replaced Ron Atkins…