Keane was instantly hooked on Ferguson's winning mentality, which Sunderland will need to replicate by the bucketload to stand any chance against the champs in their back yard.
He added: "Alex Ferguson came from Scotland, obviously a winner, and he was motivated by winning whether we were playing a top team, bottom team or playing cards on the team bus. He wanted to win and I love that in people. I identify with that and plug into it.
"Perhaps that's what he saw in me when he signed me. I count my blessings I had that opportunity to work with him. It was fantastic.
"He has upset a lot of people over the years because of his winning attitude and mentality.
"He won't let people get in his way and some people don't like it. I actually don't mind it. But because you need that as manager of a big club like Manchester United, you will upset people along the way.
"Whether it's players or staff, you have to get that into the fabric of your club. That's what I am trying to do."