“They’re a good side. They’ve got some quality. They took the chances they had and we helped them a little bit with that with some mistakes and the chances we had, we didn’t [take]. Their goalkeeper was outstanding as well, so a real disappointing night,” said the Celtic boss.
Postecoglou’s men did not go without their own chances during the game with the Hoops registering the same number (18) of shots on target as the Bundesliga side (WhoScored).
With just one win in their last five games across all competitions, Celtic fans flocked to the tweet to vent their anger at the 56-year-old manager.