An official guest list has yet to be released, but franchise stars Bill Murray, Dan Aykroyd and Ernie Hudson are expected to join Gad on the show, though it’s unclear if we’ll see co-stars Sigourney Weaver, Annie Potts and Rick Moranis. However, it may be safe to assume that director and producer Ivan Reitman will jump in at some point.
Article source: https://www.cinemablend.com/news/2547691/the-ghostbusters-cast-is-reuniting-for-some-nostalgic-fun-thanks-to-josh-gad