SON HEUNG-MIN'S brother aimed a hilarious sibling dig at the Tottenham star while filming his new Amazon documentary.
The South Korean international and Son Heung-yun were chatting to a reporter during filming for the series 'Sonsensational' in 2019.
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Heung-yun, who played in Germany with SV Halstenbek and Oberliga Hamburg before retiring because of injuries, made an appearance at Son's Football Academy.
The reporter tells Heung-Yun: "He's played in the Champions League final..."
Son's brother then immediately quips back laughing: "Yeah, but he lost."
The Tottenham forward then responds: "This is true brotherhood. We're this strict to each other."
Son failed to inspire Spurs to victory in the 2019 Champions League final with Liverpool running out 2-0 winners.
The new Amazon documentary was released on Monday and follows Son's day-to-day life as a Premier League superstar and footage from his hometown of Chuncheon.
It also shows the strict regimes Son grew up with implemented by his father.
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In one scene it reveals how his father put together an extreme training programme after Son put on 4kg of weight after the Asian Cup.
And it appears the tough love has certainly paid off with Son hitting new heights this season.
After 11 league goals and 10 assists last season, he also has 12 goals and 6 assists in 18 Prem appearances this season.
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