The Cubs released Nido (knee) on Friday, Meghan Montemurro of the Chicago Tribune reports.
Nido was released to make room for Shawn Armstrong on the 40-man roster. After signing with Chicago in June, Nido slashed .128/.143/.234 with one home run in 50 plate appearances. The 30-year-old catcher could draw some interest on the open market, though he's currently recovering from a debridement procedure on his right knee.