Noel Gallagher continues to deny it, but an Oasis reunion is inevitable according to his other brother Paul.
The eldest Gallagher sibling has been DJing on Noel's solo tour dates recently.
But he believes it won't be long before Liam, 42, is back in the frame. Paul, 48, said: "I speak to the pair of them, I see Liam every other day.
"This is a big business. I'm sure (the Oasis reunion) will happen one day, there's too much money for it not to.
"They're a premier band. Regardless of what they say... money talks."
Paul is a major influence on his brothers, getting Andy Bell in Oasis and introducing guitarist Jeff Wootton to Noel, 47.
But he's pretty scathing about Noel's solo career. Paul told the Stage Left podcast: "Noel is a frontman now but he's not a frontman, he's a sideman being a frontman. There's more than getting up and singing to being a frontman.
"Whatever Liam does the crowd goes mental. Noel has the songs but not the presence and he'll never have it."
Paul isn't keen on Noel's latest solo album. He laughed: "I bought it to slag it off. Not my cuppa tea, I like things a bit more up.
"There's something missing in that record - Liam."
It comes on the day Liam accused Noel of plotting his exit years before they split.
Garry Cobain, 47, of Amorphous Androgynous revealed Noel was talking about working solo in 2008. After reading that, Liam posted: "Busted."?
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