Ultimately, if Hyman's salary requirements escalate to the point of it having to be a choice between Nylander and him (possibly somewhere in the mid 4s).. it really doesn't make sense to keep him as much as he is a "glue guy" on tihs team.
Realistically, Tanner Pearson is a reasonable comparable (40+ points 3 in out of the last 4 completed seasons, including 21 goals and 45 points in 69 games before covid hit), and he just signed for $3.25m x 3 years. It seems logical that when dealing with players of this type at age 28, a 4th or 5th year would be considered a risk by the team; although likely in better economic and cap circumstances.
Assuming Hyman comes in around the Kerfoot range, it's simply going to mean the door for Alex Kerfoot, with Hyman's current salary available for a 3rd line C.