Well receiving a buyout would mean he could get a NEW contract to make up for the difference if not more (so at least a vet minimum discount on the buyout) AND he could look for a situation where he could have playing time and showcase himself for a new LONGER contract.
The fact that he's not willing to do so might mean he wants a buyout after being traded for the above mentioned scenario or he will just sit out this season, "Rehab" and demand the full buyout possible wherever he lands.
So draft trade or trade deadline trade? No need to hurry things up if we don't get a good deal, we need to get the most value possible out of his ending contract.