Pruemer said Alexi Casilla could still return after playing just once since the end of July due to a strained right hamstring.
"The reports out of Minnesota is that he's feeling pretty good and running," Pruemer said. "So, we just need to get him back running the bases and see where we're at with him."
Tsuyoshi Nishioka is beginning to feel better and could pinch-run soon, but isn't quite ready to return to the lineup.
Justin Morneau and Denard Span are still recovering from concussion symptoms. Span was set to take batting practice on Tuesday and do field work. Morneau is still trying to string together multiple symptom-less days.
"Still trying to get there. Still trying to look at that and go from there," Pruemer said of Morneau. "A couple good days and then he seems to have one where it's just not quite right."
Injured starting pitchers Scott Baker, Nick Blackburn and Francisco Liriano all had good bullpen sessions on Sunday and workouts on Monday. Pruemer said the plan is for Baker and Liriano to throw another bullpen on Wednesday.