White, a first-round pick at 16th overall in 2012 who never played for the Rockets, averaged 5.0 points, 4.4 rebounds and 1.2 assists in five preseason games with one start for the 76ers.
The 6-foot-8 White was on the inactive list for the Rockets as he worked on an arrangement to balance his acknowledged anxiety disorder with the demands of the NBA schedule, often criticizing the team in media interviews and via Twitter.
The Rockets suspended White on Jan. 6 after he refused to accept an assignment to Rio Grande Valley in the NBDL.
White tipped his cap Thursday to his Sixers teammates via Twitter.
— Royce White (@Highway_30) October 24, 2013
Information from The Associated Press was used in this report.