He played in his fifth rehab game with Triple-A Rochester on Tuesday, going 3-for-5 with two doubles and an RBI, while playing nine innings at first base. He's hitting .409 with four doubles and five RBIs with the Red Wings.
"He's hitting the ball hard," Minnesota manager Ron Gardenhire said. "He's getting some swings in. We'll go day by day and see where he's at. So probably Detroit or something like that. We'll see how it goes."
Morneau was originally placed on the disabled list, retroactive to June 10, with a sprained left wrist, before electing to undergo neck surgery later in the month. He was hitting .225 with four homers and 21 RBIs in 55 games before hitting the DL.
Second baseman Alexi Casilla, who is on the disabled list with a strained right hamstring suffered on July 27, ran the bases aggressively on Tuesday, and remains on track to be activated on Friday in Cleveland.
"He did really good running. He had no problems and said he could play today if were available. So he'll run again tomorrow, and is doing all his work. We plan on activating him on Friday."