Playing the "which Charger will it be this week?" is sort of like fantasy football Russian roulette; sooner or later, you're going to end up wishing you had simply watched "House Hunters" instead.
Obviously Keenan Allen isn't available - assuming your league is competent and not a three-player one - the next man up is Malcom Floyd, he of the consistent target and touchdown threat variety. He's generally boom-or-bust, so if you're an underdog, he may be worth a play going into a shootout with Denver.