If a Horford sign and trade is in the works, I wouldn't mind him going to Houston or OKC (two places he was interested in last time around) for Capela or Adams.
The Rockets get another option with Harden and we get a younger, rim-protector.
So then, we can pivot and try to sign Tobias Harris as our power forward.
Another option is we just keep Horford. At least we know what we're getting and could be a safety net in case we can't get another free agent. Just give him the 4 year deal.
Keeping him doesn't sound so bad if the alternative is total uncertainty.....