There is not a clearly defined timetable for Morrow's return, but the tentative plan does not include a lengthy rehab.
"We'll see how that first one goes," Blue Jays manager John Gibbons said. "I don't know what they'll limit him too, but I would think two [starts] max."
If Morrow does require just two rehab starts, he will most likely return before the end of June. He has been out since exiting a start against the Braves on May 28 because of lingering discomfort in his forearm.
The 28-year-old is 2-3 with a 5.63 ERA in 10 starts this season. He missed time earlier in the year with discomfort in his upper back and neck area.
Gregor Chisholm is a reporter for MLB.com. Read his blog, North of the Border, and follow him on Twitter @gregorMLB. This story was not subject to the approval of Major League Baseball or its clubs.