Feel like this is a fair trade for both. Wizards are going nowhere and they get a 1st and 2 starters they could trade down the line. Celtics get a third option that can space and rebound well, and is more available than Rob, and a good shooter in Kispert.

Wizards 5:

PG: Brogdon SG: Beal SF: Avdija PF: Kuzma C: Rob Williams

Celtics 5 PG: Smart SG: White SF: Brown PF: Tatum C: Porzingis