Another possible way to use Rasheed's deal (assuming he really will retire) is to help a team get under the luxury tax.
We saw, for example, UTA give away Eric Maynor to OKC last year to get under the tax threshold.
Since we can take back 125%+100k from another team, a team up to $2M of the luxury tax could trade us a player(s) totalling $8M.
For example UTA is right near the tax level again and will likely go over it when filling out their roster (say they get to ~71.5M). And then DWill gets hurt and they're clearly out of the playoff hunt. With Millsap and Big Al up front, they could send Okur (and his $10M next year) for Rasheed and Avery Bradley and get under the luxury tax by about 200K.