Waiting for what? There were basically 3 teams interested, of which 2 already said no thanks. Karlssons value isn't getting any higher than this, it's only going down because I doubt he will repeat a Norris season and even should such a miracle happen he's still getting older.
For me, Grier did good by not retaining a ton and getting rid of that albatross of a contract. Maybe they could actually try to rebuild now. Probably sucks to be Hertl, but nobody forced him to re-sign there and everyone was questioning it because it was obvious that team is going nowhere but down for years to come.