The Mavericks move Holmes and the seconds acquired in the Grant Williams deal to get a better fit at the 5 in Gafford. He can provide the rim running that Luka thrives with and be essentially an upgraded Powell on offense, and he provides more rim protection than the other options of the Mavs at the moment.
The Wizards would add more draft capital to their team, and might be able to revive Holmes career to flip for even more assets down the line.
