I don't see Philly just giving away Kapono. He's expiring, and teams are always looking for a shooter; they should be able to get some decent value for him at the deadline, if not now (expiring contract and a protected 1st?).
The only question might be if Philly's looking for more of a cushion under the luxury tax line, looks like they've got something like $68M in salary and I'm not sure that's including any of their draft picks.
There are still teams out there with cap space and/or trade exceptions that could take Kapono off Philly's hands without sending back any salary, and I'd wager one of them has something more that us to offer. Cleveland, for example, could trade for Kapono with their trade exception, and give Philly one of the draft picks they got from Miami. Either split time between Kapono and Anthony Parker at the 3, or Cleveland would have the option of then using Parker's expiring deal as a carrot to get someone to take Boobie Gibson's contract off their books.