By Joseph Salvador The running back shared what Brady told him when he found out he visited the Patriots as a free agent. One of the most important players to any quarterback is his running back. The halfback is a signal-caller’s partner in the backfield, a blocker they can depend on and a safety blanket for them in the passing game. When Tom Brady thought there was a chance he could lose Leonard Fourtnette to the Patriots, he wasn’t shy about where he stood. While testing the waters in free agency, Fournette visited New England and told reporters Tuesday that Brady reached out to him and said…