Simon Cowell is reportedly winning his battle with US network Fox to feature Cheryl Cole as a judge on the US version of The X Factor.

According to the Sunday Mirror the mogul has been lobbying for the Girls Aloud singer to join the panel of the show which will debut on US screens next autumn.

However bosses at the network have expressed doubts over Cheryl, saying she is a virtual unknown in America who may not be a big enough name to carry the show.

They are reportedly demanding an A-list star to rival the new judging panel on American Idol, which includes Jennifer Lopez and Aerosmith singer Steven Tyler.

But the paper reports that Simon is refusing to back down on Cheryl, and that he is prepared to fight to get her on the judging panel.

“Simon is staking his reputation on X Factor USA,” a source told the paper.

“If it takes off it will seal his place in history and he will be crowned TV’s kingpin, but there is a lot riding on it.

“American Idol have got J-Lo and Steven Tyler so Simon needs someone big. He knows he can’t just Cheryl because she’s a girl he’s fond of but at the same time he won’t be told what to do by Fox.

“It has left Simon torn. He feels very loyal and protective towards Cheryl,” the insider added, “but his business head is saying he must do what’s right for the show.”

Cheryl has admitted in the past that she is keen to appear in US version of the show.

“I would absolutely love to do it,” she said. “The talent out there is phenomenal so I would get an absolute buzz.”