Katy Perry, John Mayer joining 'X Factor' USA?
Digital Spy UK
Cheryl Cole, who was famously fired from the first season of The X Factor USA, and Ne-Yo have also been tipped to join Cowell and Demi Lovato on the judging panel. Separate reports have claimed that Khloe Kardashian will not return to host a second …
Katy Perry And John Mayer 'Offered X Factor USA Jobs'MTV UK
Simon Cowell offers Katy Perry and John Mayer $20m to join X Factor USAIrish Independent
'Having Them As Rivals Would Be Genius': Katy Perry And John Mayer Set For …Entertainmentwise