I actually have my own crackpot Alex Jones level theory (I didn't come up with it) as to why Luka is on his way out but I'm not going to share that in public unless someone asks.
Here's my insane (most likely wrong) crackpot theory:
Mavs majority owner Miriam Adelson got a heads up that the Trump admin is about to deport all non citizens (assuming Luka is a permanent resident or adjacent to that). So they traded him for assets right after receiving the heads up.
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Mavs majority owner Miriam Adelson got a heads up that the Trump admin is about to deport all non citizens (assuming Luka is a permanent resident or adjacent to that). So they traded him for assets right after receiving the heads up.