Nicole Scherzinger Rumored To Be Leaving 'The X Factor' UK

Nicole Scherzinger is rumored to be leaving behind "The X Factor" UK, just as Simon Cowell makes his return.

"It breaks her heart, but Nicole is sad not be be able to go back to the show this year. She has agonized over this decision for months," a source told The Sun. "She put her music career on hold last year but now she has to focus on her music." Scherzinger released her last album, "Killer Love," in 2011.

A spokesperson for Scherzinger, however, has told Daily Mail that the former Pussycat Doll has not actually finalized any decision to leave "X Factor" UK and that she is still in talks with management regarding whether or not she'll stay on this season. Scherzinger appeared on the show as a guest judge in 2010 and joined the regular lineup in 2011.

Scherzinger is reportedly having a hard leaving the show to return to the recording studio because she has received such a warm welcome from the British public and befriended so many fellow cast members. "This year she made so many friends on the show and they became her family," a source tells Daily Mail.

If Scherzinger does indeed return to her music career, it will likely come as a disappointment to Simon Cowell, who will return to "X Factor" UK, now that the US version of the show has been canceled due to poor ratings.

"She will always be part of the 'X Factor' family," Cowell said of Scherzinger.

If you're hoping to see her behind the judge's table this year, take a lesson from her last album, and "Don't Hold Your Breath."

The 11th season of "The X Factor" UK will premiere in 2014.