Jeff Garlin puts the chance of new "Curb Your Enthusiasm" episodes at "51 percent."
"I'd say a decent chance. Not good, not bad, decent," Garlin told a TV critics' meeting Tuesday.
He'd like to see the show return but everything rests with creator-star Larry David, said Garlin, who plays David's Hollywood agent on the HBO comedy.
It's "the only show that I know in the history of television that only moves forward because the creator is basing his decision entirely on creativity," Garlin said.
David, who profited handsomely from co-creating and producing "Seinfeld," is so "rich that he doesn't have to do anything unless it's good," he said. "He doesn't want to embarrass himself. It's pretty pure."
David, who plays a tongue-in-cheek version of himself on the show, has been otherwise occupied. He starred on Broadway this year in "Fish in the Dark," which he wrote.
HBO is patiently waiting for David, the channel's programming president, Michael Lombardo, told the Television Critics Association summer meeting last week.
"I don't think it's out of his system," said Lombardo. "I think he's enjoying his life, and I think he'll come back to it. And when he comes back, we'll figure it out."
Nothing is planned for next year, Lombardo said, but he wouldn't be surprised if the show returned at some point. Its last new episodes aired in season eight in 2011.
Garlin also stars in ABC's 1980s family comedy "The Goldbergs," which returns Sept. 23.