Even with what you said before this, the Raiders are not asking for a 3rd and they aren't looking to eat any of the money from what I understand. They want a 2nd and to pass his salary to the next team. That is the proposed trade right now. I don't see why they would even bother trading him if they had to pay him regardless. It sets up a lot of risk of making their front office and coaches look bad if he balls out somewhere else on their dime.
Plus, we would have to make the deal before the injured players get back or knowing that we were turning things around. Why would we do that knowing that we were going to have to cut him before the next league year? It's just throwing away a pick and forcing us to reshuffled future money midseason to get his salary under and leaving no room for other transactions we may need to make because of injuries. It just doesn't make any sense.