The 50-year-old was in talks with Sunderland regarding their managerial vacancy in February before opting against taking the job.
Keane has since returned to his punditry role with ITV and Sky Sports and he says his days as a manager are over.
When asked if he feels like a "manager doing punditry" by Jamie Carragher on a SPORTbible video this week, Keane said: "I did up til recently, but I almost feel recently, I think, those days are over for me now, going back into management.
"I really feel like that. I'm 50 now, I'm doing the TV. Obviously, I'm labelled as more of a pundit now.
"But no, no, I feel I'm getting my head round it. It's maybe more of a head job that is the role for me and over the next few years, I think I can't see a club really giving me a real good opportunity to get back into it.
"But I don't mind that either. I'm not fearful of going, 'Well, you might do the TV for the next two or three years'. I'm fine with that, because I do count my blessings, because I know, as you know, there's a lot of ex-players looking to get back into it, and yeah, I'm okay with that."
He added: "If going back to the punditry, you and Gary obviously, and Micah, we do love the game. And we give our opinions, I'm sure not everyone agrees with us."
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