Bieber (shoulder) will begin a rehab assignment with Triple-A Columbus on Tuesday, Mandy Bell of MLB.com reports.

EDGE Analysis

Bieber has been out for nearly three months with a strained right shoulder. Given the lengthy absence, he'll likely need more than one rehab start before he is cleared to rejoin Cleveland's rotation. It's unclear if he'll be able to do so before the end of the regular season. Even if the right-hander can get back to the big leagues in time, he probably won't be able to take on a full starter's workload.