McCown won't play again this season following Tuesday's back surgery, Christopher Dabe of the New Orleans Times-Picayune reports.
McCown was present on the injury report last week due to a lower back injury, but the severity wasn't clear until he was ruled out for an appearance in Week 9 on Friday. After an evaluation with a specialist Monday, surgery was announced for Tuesday, which will subsequently end his season. In his stead, the Saints will bring Matt Flynn into the fold to serve as Drew Brees' backup.