BREAKING: Boston, Atlanta and Brooklyn are finalizing a three-team trade that sends Kristaps Porzingis and a second-round pick to the Hawks, Terance Mann and Atlanta’s No. 22 pick to the Nets, and Georges Niang and a second-rounder to the Celtics, per Shams Charania. #nbatrades #kristapsporzingis #bostonceltics #atlantahawks #brooklynnets