Each week I’ll list the best widely available free agents for fantasy football — I define “widely available” as being owned in around half of all ESPN or Yahoo leagues — and some guys who are probably better off in the free agent pool than collecting dust on your roster. Follow me on Twitter @UTEddieBrown if you have questions throughout the week. Here are my best bets off the waiver wire for Week 6: ADD — RB Kenneth Walker III, Seahawks (ESPN: 48%; Yahoo: 46%): This is the epitome of a push your chips (FAAB) into the middle of the table moment for your fantasy team — especially if you’re hurt…