It is not currently known how long Springer, who has been rehabbing a quad injury, will need to be in triple-A but he will begin by playing five innings in the field.
After signing a club-record six-year, $150-million contract in free agency, Springer's first season with the Blue Jays has been mired by injuries. He's appeared in only four games, and non since May 2.
In recent weeks, positive momentum toward this eventual rehab assignment had been building.
At the end of May, Springer went through a workout, which included catching fly balls and some throwing exercises, and felt "the best he's felt the whole time." Then, in early June, he ran first-to-third drills and straight-line sprints in the outfield, while also participating in throwing drills and batting practice.
Unlike when Springer was used as a designated hitter in his first return from the injured list in late April, Montoyo continues to expect he will be centre field-ready when he returns this time around.
The 29-year-old has two home runs and three RBIs in 18 plate appearances for Toronto this season.