The Nets finally cashed in their most valuable trade chip, dealing Cam Johnson to Denver for Michael Porter Jr. and a first-round pick. Brooklyn will get the 6-foot-10, 218-pound forward and Denver’s 2032 first-rounder in a deal first reported by ESPN and confirmed by The Post.

There is nothing like the start of NBA free agency, and last night's frenzy certainly lived up to the billing with big trades, big contracts and big statements. We'll start with the biggest surprise: The Nuggets traded Michael Porter Jr.

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. pic.twitter.com/1fcbIslyVF