I mean if people like Jack, that doesn't reflect too well on them considering he's Terrible, so, you know, good...

I really like the first idea, especially since Jack is probably a frequent user of the warrant system himself! It's totally possible that he would have put out the warrant requesting the person come to him specifically because he had his own Plans for them, but. If that's a little too morally questionable for it to be feasible, then I'd guess that Jack probably has the kind of reputation where he might be known for dealing with Bad Dudes personally, so I can see a warrant having a request to be sent to Jack's sector pretty easily too...

Though as I type this out, this could probably lead into part two there anyways! Like Jack handles the processing, then decides to see about hiring Lavi (+ Kanda?) for a warrant of his own possibly...? Though I will say keeping Jack talking is not hard, so it shouldn't be too difficult to keep the conversation flowing lmao... He's a talker.