Tottenham Hotspur midfielder James Maddison was stretchered off the field with a knee injury in the 1-1 draw to Newcastle United in their final Asia preseason tour game.
Spurs boss Thomas Frank confirmed the injury was to the same knee that caused Maddison to miss the end of last season. He described it as a "bad" injury and a "brutal moment."
"Sometimes in life and football things can be both beautiful and brutal," said Frank.
"That's what we got today. It looks like with Madders a bad injury and then on the other side unbelievable scenes for Son from his team-mates and the respect from the Newcastle players.
"We're pretty sure it was the same knee he injured before."
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The moment threatened to overshadow what was an emotional farewell game for forward Son Heung-Min.
Son was given a guard of honour before the clash in his native South Korea at the Seoul World Cup Stadium, and he was in tears when he walked down the tunnel at the end of the match.
The match comes a day after he announced his intention to leave Tottenham this summer in what he described as the "hardest decision of his career."
"I think it's very likely Sonny's last game because it's very close", said Frank after the game on his likely departure.