I'd hope they could get more than a 3rd and if not, I'd hope he goes to the NFC. He's a headcase that will inevitably cause problems, but a team might be able to manage it for a while.
I think Atlanta makes a lot of sense. They have London, but Ray-Ray McCloud is their 3rd leading receiver for crying out loud. They'll want to surround Penix with some more talent, they are close enough to a playoff team that they might be willing to spend some draft capitol for a sure thing, and there's the he played at Georgia connection.
Commanders might make some sense, too. I think they overachieved a bit with Daniels playing hero ball, but their leading receiver is Terry McLaurin who's a solid player, but is also going to be 30 years old.
In general, if he's traded, I agree with
@Peat that he probably won't end up on one of the top teams. Good teams don't need to introduce a potential problem like Pickens. I think it'll be a team that is looking to take the next step (like the Eagles when they got Brown, Dolphins when they got Hill, or the Texans with Diggs) or a desperate team.