The 38-year-old is expected to come on the show to be aired November 4, and will also sing his new single 'Candy', reported Daily Star.
"The idea is to get the famous acts more involved in the show and the decision making. They would be there to give their opinion as unbiased judges without having a vested interest in any of the acts," a source said.
Others being approached for the UK's singing reality show include Bruno Mars, Pink and Gwen Stefani.