The actor-singer is said to have inked a deal to serve as a judge alongside Keith Urban and Jennifer Lopez for the show's upcoming 13th season, the Hollywood Reporter said.
The news comes almost a week after it was reported that record producer Dr Luke passed on the judging gig on the show due to conflict of interest.
He signed a lucrative label deal with Sony Music and by nurturing talents for Universal Music Group, which holds the exclusive rights to "Idol" recordings, he would run into a snag with Sony.
Former judge Randy Jackson has also been rumoured to return to the show as a mentor, replacing Jimmy Iovine who may leave the show after three years serving as in-house mentor.
