"She's amazing. I remember when I did something with her on American Idol she was so great," the singer and talk show host told ET's Jennifer Peros at the premiere of the HBO original movie Wizard of Lies at The Museum of Modern Art in New York City on Thursday.
"She's like, the perfect person to judge on a show like that," Connick Jr. explained. "Because she knows both sides -- what it's like to have hits and what it's like to be in a competition. She's going to be amazing."
"It's entirely possible to do American Idol in New York City," the source said. "It could be more costly, but worth it. Everyone knows that Ryan is the glue that keeps the show together. A reboot without him is almost unthinkable."