I honestly don't even believe he's on the block. I have a feeling that the Hawks are not the team picking up the phone and dialing to inquire about a trade involving JC. Are they taking calls? Sure, why not? But it'd have to be a Giannis, AD, KAT, Zion, type player imo for them to pull the trigger.
Taking calls on JC does not equal JC is on the block.