The bassist, now a member of Primal Scream, has claimed that a large enough financial offer would be able to sway the founder members of the band, The Sun reports.
Mani said: "I've very nearly given up on it. Ian and John have to get it sorted out and take it from there. For all the morals and principles that people have, you wave f**king £20 million in front of somebody and they change their mind.
"You'll see how their philosophies soon change. John Squire always said he'd never sell out for the money. If he considers it selling it out that's fine, it's alright for people who've earned millions off the royalties."
He added: "It has to be the four of us - definitely. But if it doesn't happen it's no skin off my nose, as I'm in Primal Scream and having the time of my life."
Squire has said that he has "no desire whatsoever to desecrate the grave" of the band with a comeback, while Brown also rejected rumors of a reunion.