He told TV show 'Extra': ''They've been talking. I think she would be unbelievable on a show like that. Plus she can sing.''
Among the other names thought to be in talks for the series - and replacing Paula Abdul and Nicole Scherzinger, who were axed after the first run - are George Clooney's girlfriend Stacy Keibler and pop star Britney Spears, who is reportedly holding out for a huge pay-out to take part.
A source said: ''Money is not an issue for the show. As of now, they are looking to pay her $12-15 million for the first season, with a drastic price hike for a second year based on ratings performance.
''Simon Cowell wants at least a two-year commitment and Britney wants an out clause if she doesn't want to continue after one year of service.''
A source added: ''Simon is always looking for new directions and ideas. He thinks Adele's success and achievements are incredible.''