Pistons: Cade, DWhite, Ausar, Collins, Turner - Daniss, Joe, Svi, Walsh, Reed /// I know DWhite and Turner aren't ideal in terms of star power, but I think the spacing, defense and versatility will make this an intriguing team in the East, if Ausar is able to take a leap offensively, then this team could be a legit contender I feel. Especially with Cade manning pg, I think that can unlock offensive opportunities for capable shotmakers like DWhite, Collins and Turner.
Celtics: I think the Celtics operate the best with a primary point guard, and I like Pritchard off the bench, so I'd say bring in Garland. You put Dunn at the two guard, and can make up for lost defense with White being traded, I think Markannen is perfect shooter and adds size to a lanky lineup for the Celtics. He's also younger than PG and more productive at this point in time.
Jazz: I think their team needs a center, and they need to put Ace into the starting lineup, so a descending Jalen Duren contract is perfect for their team and timeline.
Clippers: They get some younger pieces, and tradeable contracts on top of some first round assets. I wouldn't say it's the best return they could get for Garland but this trade gives them lots of flexibility. They'll be able to dangle Green, KPJ, Rui and other contracts at the deadline.
Bucks: They add some forwards to a guard heavy team and get a first as well.