In return, the Celtics get Luis, the 2025 Big East Player of the Year out of St. John's who signed a two-way contract with the Jazz after going undrafted this summer. This is less about the player Boston got in return, and solely about the financial aspect of it, and they've saved money by sending Niang to Utah.

The Celtics acquired Luis Jr. for Niang, who will likely spend his rookie season in Maine. Luis Jr. went undrafted out of St. John's, where he played two seasons after he started his college career at UMass. The 6-foot-7 guard averaged 14.1 points off 43.9 percent shooting and 5.6 rebounds per game over his three collegiate seasons.

The deal for Boucher comes shortly after the Celtics traded forward Georges Niang to the Utah Jazz in return for rookie guard RJ Luis Jr. Boston, which will be without star Jayson Tatum for most of the year after he suffered a torn Achilles,