Henry (Hunter), Conklin come to mind. Keep Thuney. Shore up the OL to protect either Brady or whomever replaces him. With enough protection, the WR corps they have plus Henry and one other decent addition (Cobb, maybe) will be good enough.
He's probably the best option of quarterbacks who are likely to be available. My only issue is his lower body is a wreck and it's affected his passing ability the last couple years.