Turner (elbow) is expected to begin a rehab assignment at Double-A Tennessee on Tuesday. Turner, who has been on the DL since the start of the season, is expected to start Game 1 of Tuesday's doubleheader for the Smokies. He remains without a firm return timetable, but if everything goes well on the rehab assignment, he could return to the Cubs prior to the end of the month. Turner, who split last season between Miami and Chicago, posted a 6.49 ERA in eight appearances (six starts) for the Cubs.