Black Eyed Peas star Will, Cheryl's manager, declared at the weekend that Chezza would be back on the panel next year.
The Daily Mirror quoted Will as saying: “It’s going to be dope.”
The US star made the comments after singing with Cheryl at a gig for Capital FM at the weekend.
A source told the newspaper that Cheryl and Simon had so far only “verbally agreed” to work together next year after talks in LA last week.
The source revealed: “Cheryl is coming back on TV in 2013 and will be working with Simon. People love to watch her. She was with X Factor at its peak.
However a spokesperson for Cheryl insisted she had no plans to join the show again.
They said: "Cheryl left the UK X Factor two years ago and has no plans to return."
Meanwhile, a friend of the Girls Aloud star told The Sun newspaper this morning: “Cheryl really enjoyed her time on the show but she has moved on. She had three really good years and wants to leave it there.”
A spokesperson for The X Factor added: "No decisions will be made on next year's series until further down the line."