Sir Alex Ferguson has claimed young players must have a "sacrifice" if they are to make it at the top level as revealed the secret behind Manchester United 's famous class of 1992. Ferguson helped bring through some of the most prestigious talent in world football as David Beckham , Ryan Giggs , Paul Scholes , Nicky Butt and Gary and Phil Neville all emerged as exciting young players in the same year. All six players went on to become legends of United and the Premier League and Ferguson has