In a 3-team transaction, Dallas received Doug McDermott; 2018 second-round pick (less favorable of Blazers, Kings picks) (from Nuggets) (#54-Shake Milton) and sent Devin Harris.
Denver moved Emmanuel Mudiay to New York in the February 8, 2018 three-team deal and received Devin Harris from Dallas plus a 2018 second-round pick from the Knicks. Harris gave the Nuggets a veteran guard for the stretch run, appearing in 27 games. More importantly for the long view, the incoming second conveyed at No. 43, giving Denver another draft asset after moving on from a former No. 7 pick who had fallen out of the starting lineup.
Denver used that No. 43 selection on Justin Jackson, then immediately packaged his draft rights with a future second-round pick to Orlando for the No. 41 rights to Jarred Vanderbilt. Vanderbilt did not become a major contributor in Denver, but the sequence preserved value beyond Harris's short stint. The Nuggets effectively turned Mudiay and a different second-round pick into a veteran rotation guard plus the draft capital needed to move up for a prospect they preferred.
Dallas sent Harris to Denver and received Doug McDermott from New York plus Denver's 2018 second-rounder. McDermott played 26 games for the Mavericks and shot 49.4 percent from three before leaving for Indiana in free agency. The second became No. 54 and Shake Milton, whose rights Dallas traded to Philadelphia for the rights to Ray Spalding and Kostas Antetokounmpo. Dallas extracted useful short-term shooting and kept the pick moving, supporting the canonical B even without a lasting core player.
The Knicks sent McDermott and the second-round pick that conveyed at No. 43, receiving Mudiay in return. He played 22 games after the trade, then 59 games with 42 starts in 2018-19 while averaging 14.8 points and 3.9 assists. That was real rotation value, but Mudiay left after the season and the Knicks gave up both a productive shooter and a usable draft asset to take the chance. The canonical B- captures a respectable return without matching Denver's asset recovery.
Nuggets Win — Denver A, Dallas B, New York B-. Denver turned Emmanuel Mudiay and a second-round pick into 27 games of Devin Harris plus the No. 43 pick, which became the trade-up piece used to acquire Jarred Vanderbilt at No. 41. Dallas received 26 games of Doug McDermott shooting 49.4 percent from three and the No. 54 pick later exchanged for Ray Spalding and Kostas Antetokounmpo. New York got 81 games from Mudiay over two seasons, including 42 starts in 2018-19. All three teams realized value, but Denver recovered the strongest mix of immediate help and reusable draft capital.