Megill (biceps) will make a rehab start with Double-A Binghamton on Sunday, Tim Healey of Newsday reports.
He is expected to pitch four innings if all goes well. Megill last pitched May 11 and it is unclear how many rehab starts he will need before rejoining the rotation. That said, the fact he will try to throw four frames and is being sent to an advanced affiliate suggests he may only need a couple rehab starts.