Free Agents/Trade Ideas

I think we need a backup SF with some size, especially If Kenrich is going to keep playing the backup 4. There isn't a lot out there but maybe someone like Joe Johnson, Nick Young or take a chance on Jaron Blossomgame. The only issue is a roster spot. I was wondering when we can use Millers exception (like 3.6 Million). I saw somewhere he still counts on the roster but not sure how that works and 10 day contracts don't start till Jan 5, problem is we need warm bodies especially at the SF spot.