We spoke one morning in 2019. That was in the August, in London, so two months after the evening in Madrid when everything went wrong against Liverpool.
It had stuck with Son Heung-min, scratching away at his days and nights, and at one point in our chat he made a sound that can best be described as a growl.
‘I couldn't count how many times I have thought about it,' he had said, and kids in Tottenham shirts were all around us on one of those community days that the club do well.