Shania Twain is a finalist to become a permanent judge on 'American Idol,' report several news sources including People magazine.

"They've been after her ever since she was a mentor on the show last season," a source tells People. "And they haven't given up."

The reference is to Shania's work during last year's Chicago auditions when "everyone thought she was a great addition to the judges' table," a show source said at the time. Shania apparently also wowed 'Idol' insiders when she mentored the contestants in April.

"Shania's a huge fan of the show and she had a great time as a mentor," the source tells People.

Although rumors abound, no one seems to know why Jennifer Lopez -- who was reportedly close to taking Simon Cowell's vacant chair -- won't join the show. It does seem clear that the show's negotiations with Jennifer have ended.

Shania was an early contender for the judge's chair, People reports. Her name was on something of a dream list of possible judges that also included Elton John, Chris Isaak and Harry Connick Jr.