updated 03/16/2011 AT 4:00 PM ET
•originally published 03/17/2011 AT 12:05 PM ET
Simon Cowell has picked a music mogul to be a judge on The X Factor.
Island Def Jam chairman Antonio “L.A.” Reid will sit alongside Cowell on the panel, a source confirms to PEOPLE.
While he doesn’t mention X Factor, Reid sent out an email to his staff on Thursday announcing, “I have decided to leave my position as chairman of the Island Def Jam Music Group. I have always thrived on growth and the next great challenge, and I look forward with much enthusiasm to what the future holds.”
“We always wanted to work with L.A., whether it was now or in the future,” Cowell recently told PEOPLE when asked who’s in the running for the judging slots. “Because in terms of his credibility and what he s achieved, he s always somebody who we would love to work with … He s had so much success. And he s also a good friend of mine.”