Tottenham goalkeeper Guglielmo Vicario seemed to silence the travelling supporters following Spurs` loss at Chelsea.
Enzo Fernandez scored in the second half, leading to the visitors` defeat, their 16th league loss of the season.
Only a few supporters remained after the match ended, but those who did expressed their disappointment.
Some applauded, while others questioned why their team continues to disappoint them.
Vicario approached the away section and gestured, waving his wrists around his head before seemingly making a shushing motion.
The goalkeeper then headed towards the dressing room, punching part of the tunnel as he left the field.
Postecoglou was also accused of cupping his ear towards the away end after Pape Sarr scored, but the goal was disallowed.
However, the Tottenham manager denied provoking supporters, claiming he wanted to hear their cheers since they`ve had little to celebrate this season.
Fans reacted angrily to Sarr replacing Lucas Bergvall, chanting: “You don`t know what you`re doing.”
Postecoglou further frustrated fans by directing his players to the away end at full-time while he stayed at the halfway line.
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Like his manager, Vicario, 28, has also had interactions with Spurs fans this season.
Following a 1-0 defeat to AZ in the Europa League Round of 16 first leg, the Italian gestured to travelling fans, encouraging more support.
This was not well-received by some, and Vicario reacted angrily before leaving the pitch.
Regarding that incident, he said: “I understand the disappointment for the night because we didn’t play our football.
“So I can understand the frustration of the fans.
“But we still have a lot to play for, especially in the second leg. It’s just a way of trying to stay together because we have the opportunity to go through to the next round.”
Marcus Bellamy