The Boston Celtics traded Jrue Holiday and Kristaps Porzingis. Why did they do that? What could be next? Here's an explainer.

The NBA offseason is officially off and running, and the Boston Celtics have taken center stage. One day after agreeing to trade Jrue Holiday to the Portland Trail Blazers, the Celtics have reportedly come to terms on a three-team deal that will ship Kristaps Porziņģis to the Atlanta Hawks.

Once Tatum was sidelined, the Celtics’ short-term agenda changed and the blueprint laid out by both the Thunder and Pacers is that the recipe for success in the new CBA is youth, value contracts, and athleticism.