It seems that two of the four mentors won’t be returning to the UK version of the X Factor next season.

The News of the World has reported that Simon Cowell and fellow X Factor mentor and pop star Cheryl Cole are both leaving the UK X Factor.

Simon is quoted by a friend as saying "I'm committed to the American show and I'm not going to do both."

Cheryl has been in the running to reprise her role as judge and mentor on the US X Factor, though as of yet, no judges have been confirmed.

Source: The News of the World