During his 26 years with Manchester United, Sir Alex Ferguson won 38 trophies, including 13 Premier League titles, five FA Cups and two Champions League titles. His impact on the game was - and still is - unquestionable, with the Scotsman being knighted in the 1999 Queen's Birthday Honours list for his services to the game.
Having achieved so much success with the Reds, it is clear that the legendary United boss made very few mistakes during his time at Old Trafford. However, he did make one or two - and even Ferguson admitted that selling Jaap Stam was his biggest.
The Dutch defender arrived from PSV with a good pedigree. He was tipped for big things and was expected to improve a Reds defence that was crying out for another leader. He spent three seasons at Old Trafford, during which time United won three Premier League titles, one FA Cup and the Champions League.
