Ange Postecoglou remained defiant as Nottingham Forest fans called for him to be sacked after barely three weeks in charge.
A damaging 3-2 Europa League defeat by Midtjylland means Postecoglou is winless in his opening six games in charge of Forest.
He has become the first permanent Forest manager for 100 years to fail to win any of his first six matches.
After Valdemar Byskov scored the visitors' late third goal at the City Ground, many Forest supporters chanted "You're getting sacked in the morning" towards the former Tottenham boss.
"The fans are disappointed. They are allowed to have an opinion on it. I heard their opinion," said a downcast Postecoglou, who was also jeered as he walked down the tunnel at full-time.
"Nothing surprises me in football. It's the climate we're in. It seems that's the way things are going. It's nothing I can control."
It was just over four months ago when Postecoglou was lifting this competition's trophy with Spurs, but he was dismissed 16 days later, paying the price for a dire domestic campaign. Now he is struggling to get results right at another club.
Poor Ange, such a nice bloke.
I'm baffled they got rid of Nuno Espiritu-Santu in the first place.