According to multiple reports Ainge refused to put either Brooklyn pick into a deal.
Darby Green

Well I already pointed out earlier that maybe that’s because he felt the Bulls were yanking his chain again and that the price would come down more because there were no other takers. I mean who in their right mind would have thought that the Bulls would make this trade? Maybe he thought he could call on them again right before their pick and make something happen for a better price then and there?