I know that dealing with the Yankees almost always is going to be a non-starter, for some obvious reasons. And it's a bit unfortunate, because sometimes there's a really good matchup out there to be had. For example....
Red Sox send Yankees: Swihart, Benintendi, Kopech, Marrero
Yankees send Red Sox: Beltran, Chapman
Red Sox shore up the bullpen, pairing Chapman with Kimbrel. Beltran in LF in Fenway probably would be fine, and his bat would be a huge upgrade for the Sox. Solves two major issues for Boston. The Yankees need to restock their system and, frankly, rebuild. Swihart could play OF for now, but he gives them a long-term answer at C. Benintendi could be a star in Yankee Stadium. Kopech is a future lottery ticket SP, and Marrero may be a useful defensive piece for them.
I'd hate to see Benintendi put up crazy numbers for the Yankees for years to come, but this kind of deal (even if it's not this exactly) would actually help both teams a lot.