Lauer (shoulder) will begin a rehab assignment with Triple-A Nashville on Tuesday, Adam McCalvy of MLB.com reports.
Lauer expects to make a couple of outings with Nashville before he'll be ready to return from the 15-day injured list, according to McCalvy . The left-hander was placed on the IL on May 22 due to an impingement of his non-throwing shoulder and logged a 5.48 ERA and 1.52 WHIP over 42.2 innings across nine appearances (eight starts) prior to being deactivated.