Apparently, there will be more beyond the people who have already agreed to leave.
The university asked for irrevocable departure pledges from faculty to determine how many additional layoffs will be needed to save $5 million in instructional costs by June 2021.
http://www.kulr8.com/story/39303536/u-of-montana-says-22-faculty-members-leaving-by-2021
Good luck, all!