Galloinari is a talented scorer, that is often injured. He doesn't play defense very well, actually kind of like David Lee.
IMO You can only have so many of this "type" of player on your team, or your team begins to loose consistently.
Golden State knew this, they replaced this type of player with a solid, tough, two-way player (Draymond). Now Denver wants to unload Gallo.
I don't want to trade away a young, solid two way player, for a player of this "type" that will be a free agent next year, and be gone. It's really short sighted.