Keane questioned the effectiveness of the club's interview process for new managers, highlighting the frequent sackings after short tenures.
He also criticised interim manager Darren Fletcher for seeking Ferguson's blessing before a match and described the team's performance against Burnley as 'a joke'.
Keane expressed concern over the club's consideration of former United players for interim roles, questioning the decision-makers like Sir Jim Ratcliffe and Jason Wilcox.