The San Francisco 49ers have another key wide receiver out besides Brandon Aiyuk. Niners wide receiver Ricky Pearsall has been "dealing with knee swelling related to the PCL injury he suffered last year" according to ESPN's Nick Wagoner. The 49ers insider reported that the "team says 'all options' are being explored and the is some concern" about his outlook. That's a serious loss for the 49ers offense, as one of quarterback Brock Purdy's favorite targets could be sidelined for a while. Niners wide receiver Christian Kirk injured his calf on Sunday, and he had 28 catches for 239 yards and a touchdown last year.