The Twins acquired Leon from the Guardians on Tuesday in exchange for right-hander Ian Hamilton.
The move restores some catching depth in the upper levels of the Twins' minor-league system after Caleb Hamilton was promoted from Triple-A St. Paul following Ryan Jeffers' (thumb) placement on the injured list shortly before the All-Star break. Leon, who is now with his third organization of the season, will report to St. Paul.