Varland will start Thursday's game against the Red Sox, Mitch Bannon of The Athletic reports.
Varland has turned in a 5.66 ERA and 1.50 WHIP over 20.2 innings since being traded to Toronto, and the Jays will now see how he fares in a new role. The 27-year-old righty began his career working primarily as a starter with the Twins, though he will likely only remain in Thursday's game for an inning or two before turning things over to the bullpen.