The 26-year-old 'Skyfall' hitmaker has been a big fan of the reality show and the series' makers have put together a lucrative deal to have her on-board as a judge, reported Daily Star.
"Adele is a huge fan of the show and has agreed to be a judge. Simon wanted her to join him and Cheryl Cole on this year's panel. Although she has turned him down due to album commitments she has promised to sign up as a judge in the next few years," a source said.
Adele, who has won ten Grammys, four BRITs and an Oscar, has the assured the makers that it would only be a matter of time before she joins the show.
"Adele hopes to release her third album this year. She will then take out 2015 to tour but said an X Factor spot for 2016 is possible, with 2017 more likely," the source said.