Sections of Nottingham Forest supporters chanted “you’re getting sacked in the morning” as well as the name of former manager Nuno Espirito Santo during their side’s defeat to FC Midtjylland.
Asked for his reaction to the chants from supporters, Postecoglou told TNT Sports: “Yeah, I heard it.
“They are fans. They want to see their team win and they’re entitled to their opinion.”
Asked if he was surprised, he added: “Nothing surprises me in football anymore.”