Sir Alex Ferguson managed some of the best players on the planet during his legendary stint as Manchester United manager - but he only felt four of them were truly world class.Ferguson cemented a legacy as one of the greatest managers in football history at Old Trafford, masterminding 13 Premier League title triumphs in 27 years.The Scot also got his hands on five FA Cups, four League Cups and two Champions Leagues before bowing out from the game in 2013.For almost three decades he regularly assembled formidable teams brimming with talent from top to bottom, helping him achieve managerial success like no other.However, Ferguson only believes he coached four world-class players during his time at United: Eric Cantona, Ryan Giggs, Cristiano.
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