We shouldnt be looking at the DEN SFs unless its Gallo. Brewer is a bench role player, and Chandler has a horrible contract he cant live up to, we already have one of those at SF. You dont want 20 million tied up at SF between Chandler, Fields, and Kleiza do you?
The guys we should be going after are Deng and Granger. Preferably Deng, who is a very good all around player and would bring the same compettitive edge Lowry has. Hes one of the best defensive SFs in the league, and is good at everything.
Granger would also be nice because hes a good player off of the ball and would give us good scoring on the wing, but hes average defensively.
A Bargs+whoever trade for Deng would make a lot of sense for both teams I think(once Boozer is amnestied in the offseason).