Source — Rockets Austin Rivers leaves Orlando bubble for family matter – ESPN

Houston Rockets reserve guard Austin Rivers left the NBAs Walt Disney World Resort school to tend to a household matter, sources verified to ESPN on Friday.
The Rockets are positive that Rivers will have the ability to return to the NBA bubble in Orlando, Florida, within days, a source stated.
Upon his return, Rivers will be needed to quarantine in his hotel room prior to resuming group activities. According to NBA procedure, the quarantine period could be as brief as 4 days if Rivers has unfavorable COVID-19 tests throughout his absence.
The Rockets were able to have two practices with their complete rotation after Russell Westbrook cleared quarantine procedures following his late arrival in Orlando. Westbrook plans to play in the Rockets skirmish Friday against the Toronto Raptors, a source said.
Rivers is a key member of the Rockets second system, averaging 8.5 points in 23.4 minutes per game.
The Athletic first reported Rivers departure.