Allen (heel) has been ruled out for Saturday night's game against the Bills.
Allen thus is slated to miss his second straight game, which sets the stage for Joshua Palmer and Quentin Johnston to lead the Chargers' Week 16 wide receiver corps, with Jalen Guyton and Alex Erickson also candidates to factor in. Allen's next chance to return to action will arrive Sunday, Dec. 31 against the Broncos.