Simons has been a hot name around the league for years. A very quick google search has "rumors" about him dating back multiple years from teams like the Spurs, Mavs, Pelicans, Hawks, Magic, Knicks, Bulls, and more.
If the Cs want to flip him, they should be able to.
I'm talking myself into the idea that this guy has been in a bad situation for years now and could really take a step forward as an all-star in the right situation.
Problem is, part of that right situation is having a stretch 5 that can open the court for him. Seems like we'd have to trade Zinger now if we kept him.
OR - the other option is trading Derrick White. White and Simons are somewhat redundant offensively, but they definitely could play together as well.