But as a pretty sweet consolation prize, Chicago fans will get to see a lot more of Det. Hailey Upton. Actress Tracy Spiradakos, who joined the Chicago Fire spin-off for three late episodes last season, now has a permanent spot on the force as she's been promoted to a series regular in Season 5, TVLine reports. In Season 4, Upton joined Voight's unit while Burgess was on a leave of absence.
In addition to Bush's exit, Jon Seda will be returning as Det. Antonio Dawson following his short move over to the now-canceled Chicago Justice.
Spiridakos is best known for starring as Charlie in NBC's Revolution, but also appeared in MacGyver and Bates Motel.
Chicago P.D. returns Wednesday, Sept. 27 at 10/9c.