Prolly their preference but I'm guessing adding Lavine in that deal would murder our space and potential re-negotiation and extend for Lauri. I think DA can talk them into White, Derozan, Williams, Collins, and stretch 5 extraordinaire Vucevic will make Collins effective out of the PnR. Cue the Tobias meme!
I think they will view Collins at 3/80 as easier to swallow than Zach at 4/180
I'm not sure they will, in fact, I'm pretty confident that they would not. Zach isn't a perfect player obviously, but I do think if he would hit the market in FA he could get a 3 year deal similar to the one he's on....or there would be many teams willing to give it to him if they could. I think there are zero NBA teams who would give Collins the deal he's on.