What does LaVine for MPJ, Nnaji accomplish for the Bulls?

After marinating in last week's Michael Porter Jr. for Zach LaVine trade rumor, I wrote about the mechanics of the deal, ultimately coming to the conclusion that it would be worthwhile to trade LaVine to his first suitor in 18 months without having to attach picks.
But the more I think about it, the less I think a deal sending LaVine to the Nuggets for Porter Jr. and Zeke Nnaji benefits the Chicago Bulls.
What's MPJ's upside?
Denver's lineups without Nikola Jokic have always been a disaster, but this year, lineups with Porter Jr. on the floor and Jokic off are some of the worst in the league, ranking in the third percentile of the entire NBA with a -18.6 point differential in 478 possessions...