By Tzvi Machlin The New York Giants have hired and fired three different head coaches since parting ways with Tom Coughlin in 2015. We’ll soon find out who the fourth coach is. According to ESPN NFL insider Adam Schefter, the Giants are expected to make a decision on their next head coach this coming weekend. Among the finalists is current Giants defensive coordinator Patrick Graham, former Miami Dolphins head coach Brian Flores, Buffalo Bills defensive coordinator Leslie Frazier, Bills offensive coordinator Brian Daboll and Cincinnati Bengals defensive coordinator Lou Anarumo. The Giants are …