By Andrew Gould After hiring new general manager Joe Schoen in January, New York Giants owner John Mara blamed Daniel Jones’ struggles on constant organizational turnover. Via Ryan Dunleavy of the New York Post, Mara said Jones hasn’t received the proper stability and supporting cast to nurture his development. He endorsed the 24-year-old quarterback, who will get another chance with a new regime led by head coach Brian Daboll. “We’ve done everything possible to screw this kid up since he’s been here,” Mara told reporters in January. “We keep changing coaches, keep changing offensive coordinat…