Manchester United legend Rio Ferdinand has candidly opened up on how Sir Alex Ferguson went “crazy” at him before a match after he “refused” to do one thing. Ferdinand played the majority of his time at United under Ferguson and has openly praised the influence of the legendary former Red Devils manager. The 45-year-old TNT Sports pundit recently opened up on how Ferguson was “devastated” over his failure not to sign one legendary former player for United. And Ferdinand shared his experience at United when Ferguson announced his retirement in 2013 and how one of his former teammates was on the…