HBO president of programming Casey Bloys confirmed Wednesday at the Television Critics Association summer press tour that Ali will star in the show's potential new season.
"I have read five scripts for a third season," he said, according to Entertainment Weekly. "I'm very, very impressed and excited about what I've read. I don't want to give away the storyline, but I really think they're terrific."
Bloys said Season 3 "will be a go" once HBO finds directors for the season, according to Deadline.
None of the previous seasons' directors, including Cary Fukunaga and Justin Lin, are expected to return.
Ali, who won an Academy Award for Best Supporting Actor this year for his role in "Moonlight," was first rumored for Season 3 this month.
He shared news of his casting on Instagram following the announcement Wednesday.
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