Let's make the Lakers offense even worse and offer them Marcus Smart for Randle. One extra year of cost control for Randle who would be a solid bench addition. Lakers can re-sign Smart if they want or just free more $$$ for their FA splash. They end up finishing at the bottom of the standings having two of the worst shooting % guards in Ball/Smart, securing better odds at the 2018 pick conveying.
We then use the DPE on Lou Williams or Tyreke, to cover lost G minutes from trading Smart, and replace his defense, with a much needed scoring option from the bench. Williams and Evans are also both capable for spot starts throughout the season.
Randle does create a bit of a logjam in minutes between Theiss, Morris, Semi, Yabu (who rarely plays anyway), but having him under contract for the extra season also preps for likely losing Baynes next year. Also makes Morris much more expendable in a trade considering his solid contract/production is appealing.