The Mariners brought back Kendrys Morales in a deal with the Twins today, but they aren’t done attempting to upgrade.

According to FOX Sports’ Jon Paul Morosi, the Mariners have asked the Rockies about the availability of outfielder Drew Stubbs. Thomas Harding of MLB.com confirms the report and adds that the Rockies would be willing to listen if they receive a “young” and “controllable” pitcher in return.