The group, which broke up in 2009 after a backstage fight in Paris between its warring brother frontmen Noel and Liam Gallagher, is said to be set to reunite at next year's Glastonbury before embarking on a series of money-spinning gigs.
It was reported hours after the news emerged by MailOnline.com they have been "promised a payday of £50 million ($A97 million) to reform and embark on a global tour".
The sum was reported as Liam, 51, sent Oasis fans into tizz by appearing to confirm he and Noel, 57, would next year tour the United Kingdom.
When asked on X about the rumoured Oasis shows, the singer said: "See you down the front."
He also later told his 3.6 million followers on the platform: "I never did like that word FORMER."
But the performer could not resist having a dig at his brother, and when asked what he would say to Noel when they returned to the stage he replied: "Keep up".
Fans have also speculated Liam could confirm the Oasis reunion while on stage for his solo headline set at Reading Festival on Sunday night.
Liam has been touring his Definitely Maybe shows across Britain this summer to celebrate 30 years since the release of Oasis' debut album of the same name.
During a show in Cardiff the singer dedicated a rendition of Half The World Away to his "little brother" - telling a crowd of fans the songwriter was "still playing hard to get".
It's been reported that along with an initial reunion at Glastonbury 2025, the Gallaghers will perform at Heaton Park in Manchester, and complete a 10-day run at Wembley Stadium.
It is understood two huge promoters, SJM Concerts and Live Nation, are in line to land the tour.
The Mail on Sunday said Glastonbury bosses have informed Oasis a headline slot at next summer's Worthy Farm festival has been "left open" for the group.
If Oasis did 10 gigs at Wembley it would break 34-year-old Taylor Swift's eight-night run at the north London stadium in June and August, making her the world's first solo artist to play the venue that many times.
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