After already securing frenemy Cheryl Cole and pal Louis Walsh, the fourth seat on the panel is still up for grabs - with The Daily Star suggesting SiCo wants RiRi to join the show.
The tabloid adds that the Bajan babe has sparked rumours after she flew into London yesterday (March 24) for a possible meeting with the music mogul, as well as supporting rumoured beau Drake on his UK tour.
Cowell allegedly believes the What Now singer would bring an edge to the talent series, with a source claiming: "Simon and Cheryl have two months to find someone to sit in that chair and they want to get the right person.
Rihanna - What Now
"Rihanna would be a shock selection because she is not an obvious choice for a family show, but that's what he wants."
They added: "This year is an important one for The X Factor. Simon can't be complacent and has to come back with a real A Team."
As well as RiRi, the likes of Ellie Goulding, Black Eyed Peas star Fergie and Olly Murs have all been linked to the final spot on the panel.