Bradley has been inactive for seven months and is returning from surgery on both of his shoulders.
While Rivers confirmed Bradley's return, the coach remains undecided in what capacity he will use the 22-year-old guard. With Rajon Rondo potentially unavailable for Wednesday's game due to a bruised hip, Bradley potentially could start.
Regardless of whether he enters the game for opening tip or off the bench, Bradley said on Tuesday that he will prepare for the game like he normally does so that he is ready for whatever the team needs.
Bradley last played against the Milwaukee Bucks in April. In 25 minutes of playing time, he recorded 14 points with one assist, a steal and a rebound.
Originally chosen with the No. 19 overall selection in the 2010 NBA Draft by the Celtics, Bradley averaged 7.6 points, 1.4 assists and 1.8 rebounds per game last season.