Article continues below advertisementSimon Cowell didn't hold back while discussing his former American Idol costar Ryan Seacrest during a recent appearance on The New York Times podcast, "The Interview." Cowell made it clear that he isn't keeping tabs on Seacrest's career.Article continues below advertisementSource: MEGASimon Cowell admitted he does not follow Ryan Seacrest's career anymore.Article continues below advertisementWhen asked about Seacrest's popularity on Saturday, November 29, Cowell replied, "I don't know, actually. He was very, very ambitious.