It was certainly nothing to write home about for Celtic fans this evening. The Hoops struggled to break down opponents Dundee at Parkhead in the first-half despite having numerous opportunities Things would change after the restart – eventually – when Alistair Johnston came off the bench to replace the sturdy Anthony Ralston and poke home with one of his first touches of the ball. The unexpected starter Yang Hyun-jun might not have had his best game in green and white but it was him down the right-flank who played the ball to his Canadian teammate who nicked in front of his marker to score. Ce…