JaMychal Green
Green is a nice option to have off the bench. He is a guy who can do the dirty work inside, he is an underrated defender, and he can step outside and shoot the 3-ball at a decent 36.3% clip. While he could just pick up his $5 million player option with the Los Angeles Clippers, there is a possibility that he will seek greener pastures elsewhere.
The Sixers as mentioned before do not have much in the way of resources for free agency. The biggest thing they can offer is the fact that they are, in fact, contenders, and getting through the Eastern Conference may be a bit easier than getting through the gauntlet that is the Western Conference.