McCarthy underwent a procedure on his right knee this week after an increase in his rehab caused some swelling, Kevin Seifert of ESPN.com reports.

The Vikings placed McCarthy (knee) on injured reserve Friday.

Coach Kevin O'Connell announced Wednesday that McCarthy (knee) has undergone season-ending surgery to repair a torn meniscus in his right knee.

McCarthy (knee) has a tear in his meniscus in his right knee and the severity of the injury will be determined once he undergoes surgery, Andrew Krammer of the Minneapolis Star Tribune reports.

McCarthy (knee) is expected to undergo knee surgery to address a meniscus issue after having an MRI on Monday, Adam Schefter of ESPN reports.

McCarthy is not practicing Tuesday, and it is unclear if he will travel to Cleveland for joint practices, Dane Mizutani of the St. Paul Pioneer Press reports.

Coach Kevin O'Connell said Thursday that McCarthy will get "a significant amount of work" during Saturday's preseason game against the Raiders, but that Sam Darnold will start at quarterback, Ben Goessling of the Minneapolis Star Tribune reports.

Coach Kevin O'Connell said Tuesday that McCarthy will get more first-team reps later in training camp, Kevin Seifert of ESPN.com reports.