"The Celebrity Apprentice" will return without Donald Trump, but it won't be for some time.The show's return date is in flux, NBC Entertainment chairman Bob Greenblatt confirmed on Thursday at the Television Critics' Assn. press tour at the Beverly Hilton. The series will not air in the coming season, he said.At present, NBC is searching for a new host to replace Trump, who is in the midst of campaigning for the GOP presidential nomination. Greenblatt insisted the new host has not yet been chosen. "Were obviously looking for a host of that show that will make noise and will be a big personality," he said. "There are a few people out there that fit that bill."The NBC prez also commented on Trump's success on "Celebrity Apprentice," and more recently, in the world of political buzz."I guess people are just, in the political world, looking for somebody who just speaks their mind, regardless of anything else. He does that. Whether you agree with anything he says, he says it without any kind of filter ... there's probably something refreshing about that," Greenblatt said. "I think at some point, you have to look at the message.""The world likes a star, and he's a star," Greenblatt recognized, calling Trump an "effusive" man.