Allen (heel) has been ruled out for Thursday's game against the Raiders.
Fifth-year signal-caller Easton Stick will be making his first NFL start after the Chargers placed Justin Herbert (finger) on injured reserve earlier this week, but Stick won't have the Chargers' top pass catcher at his disposal after Allen was unable to shake the heel injury ahead of Thursday's contest. In Allen's absence, Joshua Palmer, Quentin Johnston, Alex Erickson and Jalen Guyton are expected to serve as the Chargers' top options at receiver this week. Allen will target a potential return to action Dec. 23 against the Bills in Week 16.