Craig, who hasn't played since May 19 due to right-knee inflammation, will begin a rehabilitation assignment with short-season Lowell on Friday, Logan Mullen of WEEI.com reports.

EDGE Analysis

Craig returned from an oblique injury earlier this season, then ended up back on the disabled list after two games with a knee injury. The former major league All-Star and MVP vote-getter is way off the radar these days. So far off that he's not on Boston's 40-man roster.