Singer Jennifer Lopez had earlier expressed her desire to see him or Mick Jagger in her place as a judge. "Jon wouldn't commit to anything unless he can give 100 percent. With planning for the next album already underway, he's focused on the band."
"With all systems go for a new album and a mega-tour on the horizon, Jon wouldn't be able to give those aspiring singers the guidance they deserve," the source added.
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