Less than a week after Rockets rookie Royce White left his NBA Development League assignment he will return to the Rio Grande Valley Vipers on Tuesday, two individuals with knowledge of the decision said on Monday. White played just 12 games for the Vipers when he announced via Twitter that he was returning to Houston, citing the advice of a “team doctor.” He had not consulted the team, however, a person with knowledge of his decision said. White later said he was working to prepare for next season. The Vipers played three games without White, including road games in Pennsylvania and Indiana. Rockets officials have declined to comment about White leaving the Vipers or the decision to return. In 12 games with the Vipers, White averaged 9.6 points and 5.6 rebounds, making 41.6 percent of his shots and 62 percent of his free throws.