I don’t think it’s worst case, I think it’s most likely. Bills struggled badly vs power run teams, even with AJ Klein in the lineup. I imagine they would want to use a base 3 LBs more vs these teams. They have 3 run first teams in the division, and seem to play Baltimore, Indy, and Tennessee every year.
Then if they can’t agree on a long term deal with Edmunds, or he doesn’t take the next step this year, boom his replacement is already on the roster.
I’d take a round 2 LB who will get meaningful snaps over a 4th string WR, backup RB, 3rd string TE, or 4th OG.
The developmental guy will get poached off the practice squad and either the vet or rookie sits behind Dane Jackson.