Mills didn't play in Monday's 122-113 preseason win over the Rockets.
Mills missed Friday's preseason opener against the NBL Breakers due to rest, and it is likely that the vet was given another rest day against Houston. The 36-year-old is expected to come off the bench this season while mentoring the club's young talent in the backcourt, consisting of Keyonte George, Isaiah Collier, Johnny Juzang and Jason Preston. Mills' next chance to play will come Thursday against the Mavericks.