Gordon Hayward and Jaylen Brown to Washington for: Bradley Beal and Markieff Morris.
Why for Boston: Boston gets to pair Irving with a bonafide all-star caliber shooting guard. Tatum gets to slide to his natural small forward position. Boston gets out of Hayward's albatross contract.
Why for Washington: They need to blow it up. Brown is a nice, young building block for them. Hayward, while massively overpaid, seems to be a nice enough locker room guy on a tanking team. After this, Washington would trade Wall for another nice young player and perhaps lottery picks.