Why in the world would Atlanta make that trade?
I dunno about that trade specifically, but Atlanta already has a young point guard -- not sure he's a "star," but he's very good -- and he should be playing 32+ minutes a night.
They have holes elsewhere on their roster, particularly on the wing. Their backup big situation is tenuous with Muscala and the oft-injured Splitter, too.
So I think it could make some sense for them to trade Schroder and cash him in for a pick or two and some role players that can help them elsewhere.
Maybe Covington, Thompson, Landry, and a pick.