I selected "other." As I've said in prior posts, the right thing to do is nothing, until another team makes him a offer.
The ball is in BBD's court, and if the Celtics were to offer him something now they'd be bidding against themselves.
Meanwhile, if I were Ainge, I would be putting out feelers to the agents for Diogu and Kleiza, so that in case BBD gets an above-market offer, you have "Plan B" in place.