Sir Alex Ferguson has revealed that he demanded a 'mental toughness' in his players as the Manchester United legend opened up on how he relied on instinct in the transfer market.
The Scot nurtured some of the greatest footballing talents over the course of his 27-year tenure at Old Trafford, guiding the club to 13 league titles, five FA Cups and two Champions League triumphs in that time.
The 79-year-old was credited for his adeptness to the modern demands of the game, evolving his side to maintain their dominance at the top of English football.