The rock matriarch, who is currently a judge on the UK series of the 'X Factor', plans to retire from the spotlight when the current series ends to focus on being a grandmother to son Jack's daughter Pearl, reported Showbiz spy.
The 60-year-old had already confirmed that she is only returning to the show for one series and will move back to Los Angeles when it finishes.
"Osbourne also wants to put her feet up after a busy few years working on 'America's Got Talent', which she left last year, and 'The Talk'," a source said.