Keane played under Ferguson for 12-and-a-half years at Old Trafford, and was captain for eight of those years.
Roy Keane infamously fell out with Alex Ferguson towards the end of his Manchester United career and he spoke about their relationship in depth on Monday Night Football this evening.
'When I first went to United, some would go up to have a cup of tea with the manager after training, I never wanted that relationship with any manager, ' said Keane. I never wanted to have a cup of tea and a bit of chit chat.
'We wanted the best for United. He was critical of me at the end and saying I was running the dressing room, but senior players do that.
Former Ireland and Manchester United captain Keane has not managed a club side since he left Ipswich in January 2011, with his spell as an assistant alongside Martin O'Neill in the Republic of Ireland set-up notable for high profile fall-outs with senior players.
The former Red Devil first outlined that he and his teammates "never gave ourselves an opportunity to talk about players being world class" for fear that it would go to their heads, but then conceded that there was a handful that fit the criteria.
'I was there to try and help people. "I knew what suited me and that was keep the game simple and be a good team-mate", he continued.
"I never really had the hair dryer treatment for a performance, he might give me it for an off-the-field incident".
"From what I've seen recently from United, if you're these other teams out there - the West Hams, the Leicesters - if there was ever a chance to get into the top four, it will be this season". "They would always say the right thing". Players pool, organising Christmas functions. that was all part of my role and I don't feel I crossed the line to think I was more important than the players.
Keane was first introduced to English football at Nottingham Forest, where he played under two-time European Cup victor Brian Clough.
The Irishman remarked on the similarities in management style between Ferguson and Clough.
"I see a lot of managers on the sidelines, there's an obsession with talking and giving instructions".
"I always felt they said the right thing at the right time". They would always get it spot on, you'd be thinking, 'that was brilliant'. "What they said there, was brilliant".
"I always class the world class players as lads who were doing it for nine, 10, 11 [years] - obviously Giggsy's done it for a lot longer".