A disappointed Juergen Klopp turned the TV out when he heard fans from his former team Liverpool Trent Alexander-Arnold, who would leave the club after two decades this summer, during a 2-2 home strike with Arsenal earlier this month.
Alexander-Arnold, born in Liverpool, who came to the club in 2004 when he was six, debuted for the senior team when Klopp was the manager.
The 26-year-old, who is considered one of the best right backs in the world and can also play as a midfielder, has made 353 performances for Liverpool, who won the Premier League, the Champions League and the Club World Cup during the anniversary of Klopp.
“I looked at the game when he came up and I heard the Booing,” Klopp said at a fundraising event for the LFC Foundation on Friday.
“I am old, so I thought it might be my hearing, so I switched the volume … I needed another 10 seconds to realize and I switched off the TV. To be honest, I could no longer be disappointed at the moment. These are not us, 100% not us.”
England International Alexander-Arnold also played prominent when Liverpool again won the Premier League this season under the new manager Arne Slot.
Slot said earlier that he was not sure if Alexander-Arnold would make his last performance for the club in Sunday's home game against Crystal Palace, after which Liverpool would hoist the Premier League trophy.
Klopp, who attends Sunday's game, stopped an Alexander-Arnold Liverpool shirt to show his support for the player.
Liverpool Vooruit Mohamed Salah, who leads the score cards of the competition with 28 goals, also spoke out earlier in supporting his teammate and said that Alexander-Arnold did not deserve the angry.
Klopp said that Liverpool fans should not forget what Alexander-Arnold did for the club.
“I don't tell you, you shouldn't be disappointed, you shouldn't be angry. I tell you, don't forget. Don't forget this club,” he said.
“Every day he definitely gave everything for this badge … After 20 years he decided that he wanted to go somewhere else. If someone should be angry about this, it is the owners, but they are not.”