Miller hasn't played since he was suspended by the Nuggets on Jan. 2 after an altercation with coach Brian Shaw. He's been away from the team and on the trade block since.
The Wizards, who have come on strong after a slow start to the season, have been looking for a veteran backup to John Wall. Miller is earning $5 million this season, and his $4.6 million contract for next year is guaranteed for just $2 million. The 16-year veteran averaged 5.9 points and 3.3 assists in 30 games for the Nuggets.
Washington (26-28) is fifth in the Eastern Conference, 2½ games out of the fourth spot.
Vesely, the No. 6 pick in the 2011 draft, has mostly been a disappointment and averaged just three points and three rebounds in 33 games for the Wizards. He will be a free agent at the end of the season.
Maynor, who was signed as a free agent in the offseason by the Wizards, has fallen out of the rotation. He has a player option for $2.1 million next season that the 76ers will assume in exchange for the draft picks.