Mauer is scheduled to catch on Sunday and Monday with Class A Fort Myers, and on Tuesday could either catch or serve as designated hitter, depending on how he feels.
"He's going to stay in Florida," Gardenhire said. "It's a good situation for him. They have all the things they need down there, which is similar to here."
Gardenhire wouldn't confirm that Mauer will back with the Twins on Thursday, but Mauer likely have nothing to prove by then, as he caught three straight games earlier this week and could do the same over the next few days.
Mauer, who has been out since April 12 with bilateral leg weakness, also will have a chance to see Major League-caliber pitching when he goes up against Joe Nathan on Wednesday.
"Nathan wants to throw to live hitters, so we'll give him a really live hitter," Gardenhire said with a smile.