DOJ won't let Entercom/CBS Radio as a merged company have them but CBS Corp. could keep them by transferring them out of the radio division to the O&O TV division and keep them paired with BZ-TV.
Had the same thought - maybe CBS ends up keeping a small radio outpost like Disney did with a single radio disney outlet in LA but sounds like that is a low probability and a buyer is lurking in the wings already.
BTW an interesting side note I read someplace (maybe on wikipedia) is that with CBS controlled 80% by National Amusements (which is a private company), itself headquartered in Norwood MA, that the CBS Boston O&O stations are essentially locally owned.