Robbie Williams could join Take That for a special performance at The X Factor final this year.
Robbie, a judge on the current series of The X Factor, may get on stage with his former bandmates once more.
The Sun reports that the group are planning the guest appearance to celebrate their 30 year anniversary, ahead of a new tour in 2019.
An insider said: “It seems a shame to have one of the biggest pop stars on the planet sat there and not hear him, so they’ve been plotting a surprise for the end of the series.
“It’s a while since they got together and nobody is completely sure when it was going to happen for the anniversary so it’ll be a massive moment.”
The current series of The X Factor went live last weekend with guests Rak-Su and Keala Settle.
This weekend's show will welcome Kylie Minogue and Little Mix.
Little Mix, who won the show in 2011, will be singing brand new song Woman Like Me from their new album LM5.
Fans of the girl group are already excited, with one tweeting: "YAAAS @LittleMix NEXT WEEK ON @TheXFactor 😁😁😁 #XFactor"
Another added: "Queens will be back!!!! #XFactor #LittleMix"
Two acts left the show on Sunday leaving a total of 14 contestants currently on the show.
Left in Louis Tomlinson's Boys are Anthony Russell, Brendan Murray and Dalton Andre Harris. Ayda Williams' Overs are made up of Danny Tetley, Giovanni Spano and Janice Robinson.
Simon Cowell's Girls are Bella Penfold, Molly Scott, Scarlett Lee, and Shan Ako. Finally, the Groups mentored by Robbie are duo Acacia and Aaliyah, LMA Choir, Misunderstood and boy band United Vibe.
The X Factor 2018 is back on Saturday at 8:35PM on ITV and continues with second results show on Sunday at 8PM.