Nets sharpshooter Joe Harris is reportedly progressing from the foot soreness that has sidelined him for most of the first preseason game. Harris played in the Nets’ Oct. 3 preseason opener — a 127-108 loss to a short-handed Philadelphia 76ers team — then began exhibiting soreness in his left foot. He has been out since that game and is not expected to play in Friday’s preseason finale against the Minnesota Timberwolves, though Harris is optimistic he’ll be available for the team’s Oct. 19 regular-season opener against the New Orleans Pelicans, according to ESPN. Harris said the foot soreness …