"something" is a pretty broad net to be casting. yes, "something" has to happen even if it's just clearing the bottom 3 guys from the roster.
I think the safest assumption is that Holland will be let go.
Next, barring a major improvement in camp, if they last until then, I would strongly anticipate both Young and Hunter being moved with enough cash to cover their contracts for a highly protected second rounder from the team that gets them.
unlikely but possible, Young and Hunter are roster-clearing throw-ins to balance out salary for a trade to Philly for Okafor. This would naturally need a good first rounder (not the '17 Nets pick) and a decent player in the rotation.