According to a tweet by Marc Spears of Yahoo Sports today, the Nuggets hired Pete D'Alessandro as an advisor to Masai Ujiri.
After Google'ing him, all I could find is that he was, at one point, assistant GM of the Golden State Warriors. Not exactly sure whether that's a good or a bad thing, (depending on how much he was actually responsible for the moves they made), but hopefully having another voice in the Front Office helps.
EDIT: Here's some more information that just popped up, courtesy of Inside Hoops:
D’Alessandro, an attorney, brings more than four years of NBA experience to Denver after serving as assistant general manager and director of basketball operations for the Golden State Warriors from 2004-08.
While with Golden State, D’Alessandro was involved in all player-related basketball matters, including player contracts, salary-cap analysis, and Collective Bargaining Agreement rules and regulations.
So, not so much trading and personnel moves, but free agent/contract stuff?