Cowell, who recently announced he would be returning to the UK show after a three year break, said he spoke to the singer about coming back as a judge, but claimed she "had a poker face on".Speaking at the latest Britain's Got Talent auditions in London on Tuesday, Cowell said: "I would love Cheryl to come back."To be fair to Cheryl, it's never been about the money with her. It's all about whether she wants to do it, whether she can deal with the pressure."Cole left the judging panel along with Cowell in 2010 to join the music mogul on the American version of the singing competition.However their friendship became frosty when Cole was sacked from the programme early into the auditions stage.Cowell's return to the UK show comes as the X Factor USA was axed after three years.He claims the programme would have been renewed if he had stayed on as a judge."They would have taken the American show, but they wouldn't take it without me, so we sort of booted them off, I suppose," he said."But it's not like that. I don't know why any show wants to compete in America right now. It's too flooded, the market."There's going to be... something like 14 talent shows on American TV (this year). It's becoming like a joke."He added that he is hoping to emulate the success of his final X Factor series in 2010."I've always said it's like my baby," he said."I love doing the show. It has found some amazing people and I want to go back to where we left off in 2010. We do another year like that, it will be amazing."The main reason I came back is that final year produced 45m album sales. We had a phenomenally successful group of talented people. It tells me they're there, we've just got find them and make them successful."