Kemba Walker addressed the media Wednesday talking about his stem cell injections in his left knee and the recovery process. CLNS Media's Bobby Manning and Mariah Janos discuss Walker's comments and who could possibly step in during his absence. br br - #celtics #NBA #CLNSbr The CLNS Media Network is the leading provider for videoaudio content. CLNS is a fully credentialed member of the media with access to all NFLNBANHLMLB teams & venues.