While it may appear that decision for Donnell to leave was mutual, his time on "Chicago Med" reportedly came to an end because the showrunners had nothing left for him.

"The cast departures stem from creative reasons related to the characters' story evolution," sources told Deadline at the time. It was a move that not only left Donnell temporarily out of a job, but one that forced him and his wife to actually move from the Windy City altogether. "We came here just after getting married to a new job and quickly fell in love with everything Chicago has to offer," Donnell wrote in a July 2019 Instagram post. "Thanks for all the memories, we'll visit often."

Since his departure, Donnell has appeared in several different projects, including the TV movies "To Catch a Spy" and "Love on Iceland," as well as the Australian mini-series "Irreverent," which is currently filming.