The former Spice Girl is due to begin filming the ninth series this week after being brought in by fellow judge Simon Cowell, says The Mirror.
Pop star-turned-fashion designer Victoria is set to earn an estimated £155,000 appearing in at least two episodes of the talent show – and insiders say that a regular slot could be available if she wants it.
A source told the Mirror: “Victoria is hugely flattered as this is one of the highest profile gigs in America.
“It really is a big deal. Victoria’s profile Stateside has never been higher. Network bosses would love to give her the job full-time and it looks like it’s there for her if she wants it.”
The source added: “Victoria’s appearance on American Idol is sure to provide a massive ratings boost in the UK so, really, everyone’s a winner.”
The news follows Paula’s announcement on Wednesday that she was quitting the show after eight series.
She wrote on Twitter: “With sadness in my heart, I’ve decided not to return.
“I’ll miss nurturing all the new talent but, most of all, being a part of a show that I helped from day one become an international phenomenon.”
Hosted by Ryan Seacrest, American Idol is the most popular show in the US, with an average audience of 26.3 million tuning into the last series.
Victoria will join Simon, Randy Jackson and songwriter Kara DioGuardi for the series which begins tomorrow.
A spokesman for Victoria declined to comment.