The singer proved a hit with viewers during her guest judging stint earlier this year, and many have called for her to join the show full time.
Mel has been a judge on the Aussie version of the show for the past two years, which is what ruled her out of appearing on this year's UK show.
But now she's set to move back to the UK for the show, replacing either Nicole Scherzinger or Tulisa Contostavlos.
We reckon we can guess which.
A source told the Daily Mirror this week: “She’s ready to come back. All her obligations in Australia, where she’s been living for two years, come to completion at the end of January.
"[Her daughter] Phoenix really wants to be in the UK and Mel’s getting signs that things are going to work out with The X Factor. The thing about Mel is she goes where she’s wanted and where the work is. And if that’s the UK then so be it.”
Mel previously admitted she would love to join the UK show and confessed: “I’m not going to lie – I have no idea where the future will take me.
“I quite like not knowing what’s going to happen, where I’m going to be or how I’m going to do it. I
love grabbing different opportunities. I’m very lucky.”