Gary Neville has recalled a tense moment where he felt Roy Keane went too far in a heated Manchester United training session. Neville and Keane were each cornerstones in the United side for a large part of Sir Alex Ferguson 's legendary reign. Fergie built an unrivalled will to win amongst his various squads. It's been well documented that impassioned competitive nature extended beyond matchday and onto the training pitch . No one wanted to lose the small-sided games they played between