Rounding out the “celebrity” cast are free-agent National Football League running back Rashad Jennings , bull rider Bonner Bolton , ” Saturday Night Live ” alum Chris Kattan , actress Heather Morris, singer Normani Kordei and reality stars Nick Viall and Erika Girardi . Kym Johnson , who last competed on the celebrity dance competition in spring 2015 with her now-husband, Robert Herjavec , will make a grand return to the DWTS dance floor as a pro for season 24, ET has exclusively learned.