Mavs solve point guard problem, Lakers get more shooting, Jazz get off Sexton
Don't feel like explaining much. So, basically Klay gets to play with Luka gain and in his hometown. Mavs, get a decent starter in Sexton while Kyrie's gone for about half the year and have Gabe as a backup. Jazz finally get off Sexton.
Maybe add a swap from the Lakers if you don't feel like the trade's fair.