American Idol producer Nigel Lythgoe is aiming to replace the show's current judging panel with Justin Bieber, Selena Gomez, Pink and Sean Diddy Combs, the gossip website RadarOnline reported Monday, citing an unnamed Fox-TV insider. Executives connected with the show have already concluded that the season has been lackluster -- ratings have dropped to their lowest level ever -- and that there is no chemistry among the judges. They are aware that it will cost a Fortune to bring together what the show is calling a dream team, the Radar source observed, but the show has gotten so stale that Fox is desperate for a revamp -- they're willing to pay to put Idol back on top. A panel composed of Bieber, Gomez, Pink, and Combs would be regarded by viewers as a powerhouse group, the Radar source said, and everyone would tune in to see [them].