It's an idea. But I don't think either team does it.
First off, DAL wasn't going far in the playoffs this year even if KZ and Powell had full health. They were likely the 6th best West team. And KZ is still getting his legs and shot together.
They have a deep team and very good coach. So Next Man UP. Kleber has been playing the same number of minutes and providing the same boards and scoring as Powell. His D isn't as good as Powell's, but he can knock down 3's. So boom Kleber steps in and they just need to back him up. Give Maxi a few extra mins. Go some smallball with Funky-Smith and Just Jax at PF. It's not even much of small ball since Luca is a 6'7" 230 PG.
There other German, Broekhoff is due back from injury soon. he's 29 and shoots 3's well. No Powell, will give him an opp once he's back.
Scurry, Brunson, Delon, Barea. Hell, they could dust off Courtly. Otherwise, more Boban is never a bad thing, in the right situations. Some teams flat-out can't handle him. A deep team. No need to panic. Or take on middling Knix.
Really, I think Kleber is a better player than Bobby "Mr. Consistent" Portis. I wouldn't lose Delon's D for Portis' every 3rd game scoring.
Knickwise, Delon would be another backup PG on our roster. That'd make 4, all of whom can't make a 3. Elf, Delon, Franc, Jr. Smith. Where we going with that?
I don't think DAL has an emergency or Knix are trading for another backup PG.