I think in a trade like this, for a player like Teague, the only players not available are Melo/KP. Teague immediately becomes our 3rd best player, and is a guy who can play on par with Mike Conley, but only cost 8 million next year vs Conley who would cost maybe 2.5 times that.
The question is what does Atlanta want. Calderon is a player who makes some sense for them only because they need a veteran to pair with Schroder. Even if Dennis starts, Calderon comes in as the backup. They'd want more you would think. I agree with others that suggest Derrick Williams would be on their radar. As would Lance Thomas. They lost Carroll and may covet a versatile wing who can play a number of spots up front. DWill fits in with that thinking, as would Lance. Seems Thomas is not able to be traded this year though without his consent.
Afflalo has averaged 23 points a game against them in 3 meetings, so they may be higher on him than most teams.
Not sure if I want to trade Derrick Williams in a trade like this. He's been playing really well. Problem is what is his market value in the summer? Is he interested in returning on a reasonable deal or will he jump at the highest bidder (What majority of guys would do). If he's going to go for the highest bidder, it may end up costing NY money they don't want to invest right now.
Biggest value in Teague is not just on the court. It's his contract. Only 8 million next year. If NY signed a free agent of his caliber in the summer it would cost them 18-20 million possibly.