Polanco is expected to be called up by the Twins as Trevor Plouffe (ribs) heads to the DL, Rhett Bollinger of MLB.com reports.
Polanco is one of the most exciting prospects in the Twins' organization and had a short stint in the majors last season. At 22 years old, the shortstop is batting .286 with one home run in 10 games this season at Triple-A Rochester. The transaction is expected to be announced Tuesday.