I think right now, Daniels may be the most likely option to trade. He has an expiring contract, that could be paired with cash or a pick or two to try to get a decent replacement.
The first place I would look would be Cleveland. Both Moon and
Parker would be excellent options, and may be available for some cash and a second rounder to go along with Daniels' contract.
Some other options would be Tracy McGrady, Dahntay Jones (they would love to get an expiring for him), and maybe even Al Thornton (if we throw in our first rounder...which won't be worth a ton anyways).
The other option is to trade Daniels along with cash to pay him, and a little something for their troubles to a team under the cap, or a team with a TPE and who is not over the luxury tax. Then they can go after buy outs or free agents, and will save a few million off Daniels' luxury tax.