‘The top four are set with Khalil Shakir, Curtis Samuel, Keon Coleman and Mack Hollins. Last year the Bills rostered only five, and based on his fully guaranteed contract, Marquez Valdes-Scantling presumably is the fifth man. Now he’s hurt, as is Samuel, but coach Sean McDermott said Thursday that he believes both are in a good spot to return for Week 1. If that happens, is that group done, or will the Bills consider keeping six. Would it be Tyrell Shavers who makes the team? He has done some nice things in practice but he’s done nothing in the first two games, with the caveat that the QB situation has been, to put it mildly, troublesome so it’s tough to evaluate.’