The Revolution actor, who was nominated for a 'Best Supporting Actor' Emmy award this year for his role in AMC's Breaking Bad, will reprise his role as Pierce's (Chevy Chase) younger brother Gilbert.
Esposito appeared in the third season episode 'Digital Estate Planning', and will feature in an episode early in season four according to TVLine.
Community creator and executive producer Dan Harmon was "fired" following the show's third season, and will be replaced by Happy Endings writers David Guarascio and Moses Port for the fourth season.
> 'Community' Joel McHale Q&A: 'The fan support has been crazy'
> 'Community' showrunners at Comic Con 2012: 'We won't screw up'
The fourth season premieres on NBC on October 19. Watch a promo for Community below: