Harmon was fired last season because of creative differences with Sony Pictures Television and NBC.
Zap2it.com said Harmon confirmed during a taping of his "Harmontown" podcast that he had been asked to return to "Community" as lead writer-producer.
Harmon requested his comment be cut out of the final podcast before adding: "Ah, [expletive] it. I don't care who knows!"
Zap2it.com said Harmon also joked that he would only go back to the show if former cast member Chevy Chase -- with whom he reportedly didn't get along -- also returned.
Starring Jim Rash, Joel McHale, Gillian Jacobs, Yvette Nicole Brown, Danny Pudi, Alison Brie, Donald Glover and Ken Jeong, the show is about a group of students and staff at a community college.
NBC hasn't commented on Harmon's remarks or announced his rehiring.