What about Mason Plumlee? He's was pretty disappointing for the Hornets. With the loss of Bridges and the additions of Richards, Williams, and Jones in consecutive years, maybe they will go full rebuild.
Plumlee is the ideal veteran role player as a backup. He's unselfish, can protect the rim, and is a pro at running the DHO game. He'd be an ideal backup for Rob Williams that neither wants to take his starting role, but is also not afraid of anyone. He'd give legit backup size against Lopez, Giannis, Embiid, Davis, or Jokic.
On top of that, I seriously doubt he is worth anything more than a future 2nd, like for instance the 2023 Orlando or Portland 2nd.
Maybe we could snag PJ Washington too. Even though we really don't have a role for him, I like him and think he can be in the rotation on a contending team.
Edit: Ooh. Maybe a three team trade that brings Poetl to the Hornets, Plumlee to the Cs, and the Orlando 2023 2nd, and a future conditional 1st from the Hornets to the Spurs. That makes a ton of sense for all three teams.