The Cubs reinstated Kilian (shoulder) from the 60-day injured list and optioned him to Triple-A Iowa on Wednesday, Meghan Montemurro of the Chicago Tribune reports.

Kilian had been on the shelf all season while recovering from a teres major strain of his right shoulder, but he's healthy again after completing an eight-appearance rehab assignment in the minors. The last five of those outings came at Iowa, with whom Kilian gave up seven runs (six earned) on eight hits and five walks while striking out three over eight innings. Though his results were generally poor, Kilian tossed three no-hit innings in his most recent appearance Sunday. Kilian had been working in relief during his rehab assignment, but since the Cubs didn't have a spot in the bullpen available for him upon his activation, he could get stretched back out for starting duty with Iowa.