Cheryl Cole reportedly out as judge on U.S "X Factor"

(CBS) - The show hasn't even hit the air, and big shakeups are already taking place on the judges' panel for the U.S. edition of "X Factor."

British pop star Cheryl Cole will reportedly no longer be a judge on the Fox talent competition, spearheaded by former "American Idol" judge Simon Cowell.

According to the UK's Sun, Cole will be replaced by former Pussycat Doll singer and "Dancing With the Stars" champ Nicole Scherzinger, who was originally tapped to be the show's co-host.

Pictures: Cheryl ColePictures: 2011 TV Upfronts

While some reports suggest that Cole, 27, was fired over concerns about her low U.S. profile and thick Geordie accent, the Sun claims she left because she was simply "homesick."

"It hasn't worked out. She's homesick and wants to return to the UK," says a source from the show. "Whether she ends back on UK "X Factor" is open to speculation."

Cole, who has been stateside recently promoting the show, was originally set to join former "Idol" judge Paula Abdul and Antonio "L.A." Reid, the former chairman of Island Def Jam Music Group, along with Cowell on the judges' panel.

The 27-year-old singer-songwriter has been a judge on the British version of  "The X Factor" singing competition since 2008.

Reps for the show and Cowell have yet to provide comment.

"X Factor" will premiere this September on Fox.