Parker has not played for the Bucks since he tore his anterior cruciate ligament in his left knee last February.
It is unclear how soon Parker could return to action for the Bucks, but he is obviously getting closer.
Parker practiced with the Wisconsin Herd of the G League on Monday, and he will rejoin the Bucks for practice this week, when they have two home games.
It is possible Parker will return to the G League for more rehabilitation work when Milwaukee goes on the road again.
At the time of his injury last season, Parker was averaging 20.1 points in 51 games, including 50 starts.