Megill (back) will throw a bullpen session Saturday, Curt Hogg of the Milwaukee Journal Sentinel reports.
Saturday will mark Megill's first time throwing off a mound since a lower-back injury forced him onto the injured list near the end of July. It remains unclear how far away he is from rejoining Milwaukee's bullpen, but the return of Devin Williams means that Megill will almost certainly be moved into a setup role once he's activated.