This literally doesn't even make sense in any way. Unless they think their D is "complete" and is targeting one of the absolute top young LHD--but most of those guys are on teams that wouldn't want to disrupt with a trade and have literally no need to (Werenski, Sergachev, etc.). Plus, Kings are still figuring out what their needs are, as the youth evolves...but they're absolutely chock full of #2-#6 guys in the system. Anderson has been playing well with Doughty. Clague looked awesome in his time. Bjornfot now looks better than both. Kings' top 4 has been excellent with Doughty anchoring one pair (with Anderson) and Roy anchoring the next (with Clague or Bjornfot), and the depth has been good as well with Walker, Strand, and Maatta.
Not sure what they'd give up for a young 'upgrade' on those guys, and as pointed out above, the timing is super weird. No point in a lateral move when you're oozing prospect depth and could fill internally. This would have to be a 'sure thing' trade for a young, established top level dman. That's about the most expensive thing I can think of and seems a bit early for that.
Sure the Kings have needs but this year should be about exploring what they actually are.