"I'm 100% a guy will win this year," Cowell toldExtra during a Saturday night interview with ex-girlfriend Terri Seymour.
This isn't the first time Cowell has picked a male contestant as his early favorite to take home the Idol title.
While he was neutral before last spring's seventh season and said there were several "strong" guys and girls, he had said there was "one guy who stands out in the crowd and has what I call the liability factor" prior to Idol's Spring 2007 sixth season, which was subsequently won by Jordin Sparks.
Following its two-night, four-hour debut, American Idol's eighth season -- which will feature the on-screen addition of new fourth judge Kara DioGuardi -- will air the reminder of its open auditions and Hollywood Week broadcasts in the Tuesdays 8-9PM ET/PT time period beginning January 20 and the Wednesdays 8-9PM ET/PT time period beginning January 21.
Cowell described DioGuardi as "mouthy," but added she's starting to grow on him.
"She's mouthy, this girl. I'm beginning to warm to her," he told Extra. "I think she knows what she's talking about."