The NFL Players Association keeps track of every player-agent relationship in the NFL. Next to Jacoby Brissett’s name is one word: Self. It implies that Brissett is venturing out naively into the NFL world without much guidance or direction. Of the 253 players drafted last weekend, Brissett is the only one without an agent. But do not fret for Brissett. The talented quarterback from North Carolina State has the most unusual and knowledgeable posse of any player in the draft. Among those in his corner — prepping him for predraft workouts and interviews, helping him with his footwork, negotiating his rookie contract, and advising him about life in the NFL — are a seven-year NFL safety, a top NFLPA executive, and, most notably, a Hall of Fame coach.