Singer Gwen Stefani is no longer working with her manager. She has decided to end her professional relationship with Jim Guerinot's Rebel Waltz management firm after a 16-year partnership.

The No Doubt singer hasn't officially hired a replacement, but she has been linked to media mogul Irving Azoff. Azoff pushed Stefani to temporarily replace his pregnant client Christina Aguilera as a judge and mentor on the upcoming season "The Voice."

Stefani had reportedly been considering a deal to join another reality competition, "Rising Star," before Azoff suggested she join "The Voice."

Stefani is expected to join Pharrell Williams, Adam Levine and Blake Shelton when the new line-up for season seven is revealed in the near future.

The next season of "The Voice" is set to start filming in June.