8:30pm: David Aldridge of NBA.com mentions that the D-League assignment is part of a "multi-week plan", and Berman clarifies that the workouts in Houston along with the stint in Rio Grande Valley represent steps one and two of that plan, respectively.
8:02pm: The Rockets have sent rookie forward Royce White to their D-League affiliate, the Rio Grande Valley Vipers (according to a tweet by Jonathan Feigen of the Houston Chronicle). White is yet to appear in a regular season game for Houston this season and should have a better opportunity to develop more in the NBDL.
Mark Berman of Fox 26 (via Twitter) mentions that the 6'8" forward had worked out with a member of the Rockets' organization this past week, and Feigen adds that the assignment is part of a plan in which White is on board with to ultimately get him ready for the NBA.