Former Arsenal captain Granit Xhaka was involved in an angry exchange with a Bayer Leverkusen fan following their shock defeat to Arminia Bielefeld in the DFB Pokal semi-final.
The Switzerland international was seen at full-time in a heated encounter with a member of the away supporters. Although there is no audio of the incident, there were angry gestures from both Xhaka and the supporter as their cup defence came to an end.
Jonathan Tah fired Leverkusen in front, but the lower-league opponents fired back to lead at the break after goals from Marius Worl and Maximillian Grosser. Leverkusen CEO Fernando Carro was furious after the defeat, not only with his side's display but also with the lack of watering of the pitch. He said: "It was a collective failure.
"Still, it annoys me that the pitch wasn't watered. That's a regulatory issue. The DFB should impose a penalty. That's unacceptable. That's unacceptable."
Xabi Alonso's side travelled to Arminia Bielefeld as overriding favourites, but the hosts, who are three tiers below the reigning Bundesliga champions, pulled off a surprise 2-1 win. It is the latest scalp for Bielefeld, who beat three German top-flight teams to reach the final four but now are set for a historic final in Berlin - where they will face the winner of VfB Stuttgart and RB Leipzig.
For Xhaka, it's another flashpoint in his Leverkusen career. Already, he enjoyed a record-breaking campaign last term as Alonso's side went unbeaten in the league and cups, reaching both the DFB Pokal and Europa League final - ultimately losing in the final to Atalanta.
The 32-year-old was jeered when he was substituted during his time at Arsenal, where he reacted by waving and cupping his ears sarcastically, and he admitted previously that he nearly quit the Gunners after the incident against Crystal Palace in 2019.
"When I close my eyes now, I can still see their faces. I can see their anger," he told the Players' Tribune. "The passports were out. I was done with Arsenal. Finished.
"I had barely begun to move when I heard the boos. And it was not just a few guys in the corner - it was a lot of people. I was shocked. I had never experienced anything like this," Xhaka added.
"This is hate. Pure hate. I am really not exaggerating this.
"To feel that level of hatred and disrespect - I wouldn't want it for my worst enemy. Still to this day, if we have lost, I hate walking those last metres to the tunnel, because I still recognise the faces. The same people are sitting there.
"So now, I just keep my head down. I lived through that nightmare once. I don't ever want to do it again."