Megill is available out of the bullpen Sunday against the Reds, Will Sammon of The Athletic reports.
The right-hander allowed four runs with a 9:2 K:BB over 9.1 frames in the past two turns through the rotation for the Mets, but he'll shift to the bullpen with Paul Blackburn (hand) returning from the injured list Monday in Toronto. Megill could be called upon for a spot start or two down the stretch, but for now he'll operate in a long-relief role.