Cheryl Cole has reportedly told Simon Cowell she will quit the X Factor if he fires fellow judge Dannii Minogue.

Simon has apparently been looking for a replacement judge for the new series of the hit ITV talent show but The Sun reports that the Girls Aloud star has put a spanner in the works by refusing to sign her new contract until Dannii, 37, has signed hers.

A source said: “Cheryl told Simon straight – if it’s not her and Dannii together, then he’s looking for two new stars. There’s no way he will let them both go.”

Cheryl, 25, replaced Sharon Osbourne on the panel.

The source added: “The show was a bigger success than ever, and Simon knows a lot of that is down to Cheryl.”

But she is reportedly concerned she might not get on with the new judge. Stars rumoured to be being considered include Charlotte Church, Destiny’s Child superstar Kelly Rowland and Lily Allen, who Cheryl once branded a ‘chick with a d**k’.

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