I would draft Porzingis and then sign Greg Monroe. Porzingis gives you the stretch four and rim protection that would be the perfect balance for Monroe's low post game. Once Sully/KO and Zeller are coming off the bench as role players, then we really start to compete.
I like that combination a lot as well. Porzingis and Monroe would be an extremely complementary pair on both ends of the floor. It implies that one would be giving up one or two of our bigs in the trade, of course.
Alternatively, if you've spent any time watching vids of Mudiay, you'd know that he is a great transition guard who loves to reward rim-running bigs --- of which, Greg Monroe is one of the best. Those two would make a pretty nice pair as well. He'd be the choice if the trade moved someone from our back-court.
If I were to guess at who Danny might be targeting, it would probably be Porzingis, though. He scouted him a lot last year and he makes a lot of sense.
We aren't likely to get this trade with just our picks. Jackson will want one or two of our young players. And we'd probably have to eat Calderon's salary.