The 38-year-old, who temporarily reunited with his former bandmates to record 2010 studio album, 'Progress,' made the admission when asked by radio station Magic 105.4 whether he would ever go back again:

"I really, really hope so. The boys are pleased with me and I am pleased with the boys, I think there's an open invitation but we will see what the future holds."

Williams, who releases his ninth solo effort, 'Take The Crown' on November 5, also described how he penned his new single, 'Candy,' with Gary Barlow:

"It was written with me and Gaz in the attic at my place in LA, he moved in with us for a little while and we spent days and nights up there giggling about all things in general and this was one of the first songs we wrote together."