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The NBC reality singing competition, which returned to US screens on Sunday (February 5), may also broadcast its next season this fall at the same time as The X Factor USA's second season, according to The Wrap.
Confirming that show bosses also hoped to resign Adam Levine, Cee Lo Green and Blake Shelton as coaches, a production insider claimed: "We're really pleased with the entire cast. You look at [the] ratings and it's no accident."
> Simon Cowell: 'The Voice' coaches haven't discovered many artists'
> 'The Voice' blind auditions, part 2: Live blog
The insider also said that Aguilera's deal is for less than a previously reported figure of $10 million (£6.3 million), and that her contract includes a note that the show will be filmed between September and December this year.
NBC has not confirmed that a third season of The Voice would air later in 2012, but did reveal that the network is 'considering' a fall transmission date.
The Voice's second season premiere attracted 37.6 million viewers on Sunday evening, with 19.3 million viewers tuning in the following night.
> Kelly Clarkson, Lionel Richie to guest mentor 'The Voice' season two
> 'The Voice' season two premiere: Live blog
