Spurs get:

SF Jaylen Brown

SF Sam Hauser

Celtics get:

PG Dylan Harper

SG Devin Vassell

PF Harrison Barnes

SG Malakai Branham

SG Blake Wesley

2028 SA SRP

Why the Spurs do this:

They make a bold move to add a superstar and bolster their bench.

Why the Celtics do this:

They continue cost cutting and get a good return for Brown.