If I were Ainge I would seriously consider a Irving to Boston for IT, Crowder and Nets pick. IT and Irving are pretty much the same player...scorers, weak defenders. The Cavs could still trade IT if they didn't want to resign him. Irving is also younger. Ainge isn't getting anyone with the Nets pick as good as Irving.
Irving, Hayward, Brown, Morris and Horford with Baynes, Zizic, Tatum, Rozier and Smart off the bench...sounds good to me.