The Hangover director Todd Phillips has stepped aside and now Steve Conrad, who wrote the script, will take charge of the film, according to The Hollywood Reporter - and he has met with Hirsch.
Adam Devine and Joaquin Phoenix are also reportedly among the frontrunners to play the late Blues Brothers star.
Tv actor Nelson Franklin is being considered to portray Belushi's longtime sidekick Dan Ackroyd in the film.
Belushi died from a drug overdose in 1982, aged 33.
Belushi's widow, Judy Belushi Pisano, will co-produce the new film, while Aykroyd is on board as an executive producer.