Gwen Stefani Splits From Longtime Manager

Also: Why the No Doubt singer defected from "Rising Star" to "The Voice."

Gwen Stefani is being wooed by multiple suitors. According to sources, the No Doubt frontwoman, 44, was close to signing on as a judge for ABC's summer singing competition Rising Star before opting instead to become a coach on NBC's The Voice.

Helping sway the singer's vote? Mega-manager Irving Azoff (Eagles, Van Halen, Chelsea Handler). He suggested Stefani replace another of his clients, Christina Aguilera, who will take a hiatus while pregnant. Although at press time the deal was not yet done, Stefani is expected to join Pharrell Williams, who takes over Cee Lo Green's chair, for season seven in the fall. "She's a friend of the family," Azoff tells Billboard of his relationship with Stefani.

The singer and her band No Doubt recently parted ways with Jim Guerinot, their manager since 1998. Stefani's defection marks the second longtime client to leave Guerinot's Rebel Waltz Management. Trent Reznor split in December to join John Silva's Silva Artist Management. Azoff denies that he has taken Stefani on as a client, but insiders claim otherwise.

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As for Rising Star, it too has had some commitment issues. (The show is produced by Dick Clark Productions, which is owned by Guggenheim Partners, the parent company of Billboard.) According to sources, rapper Pitbull and country star Luke Bryan have both turned down the show's judging invitation. Rising Star has now set its sights on Kesha and, with manager Scooter Braun (Justin Bieber, Ariana Grande) being considered for a mentor role. (Reps for Kesha and had no comment. A rep for Stefani could not be reached.)

STORY: Gwen Stefani in Talks to Join NBC's 'The Voice'

A judging spot on a network hit can be hugely lucrative. Salaries range from $1 million per season, which Demi Lovato got her first year on Fox's The X Factor, to upwards of $18 million, which was Mariah Carey's salary on the 2013 edition of American Idol. Aguilera is believed to have recently been bumped up to $12 million a season on The Voice.

Stefani -- who gave birth to her third child with husband Gavin Rossdale in February -- would likely command a similar fee. And on the social front, Stefani -- who has 1.15 million Twitter followers -- starts ahead of Aguilera, who now has more than 12 million followers but sent her first-ever tweet during her Voice debut. The main network consideration, says one source, is "finding the pop artist that has the reach and social media following that can help draw in viewers."

This article first appeared in the May 3 issue of Billboard magazine.