Son called up for South Korea hours after injuring hamstring

Tottenham's Son Heung-min receives medical attention during the English Premier League soccer match between Arsenal and Tottenham Hotspur at the Emirates stadium in London, England, Sunday, March 14, 2021. (Julian Finney/Pool via AP)

Tottenham's Son Heung-min during the Europa League round of 16, first leg, soccer match between Tottenham Hotspur and Dinamo Zagreb at the Tottenham Hotspur Stadium in London, England, Thursday, March 11, 2021. (AP photo/Alastair Grant, Pool)

Tottenham's Son Heung-min vies for the ball with Dinamo Zagreb's Lovro Majer, left, during the Europa League round of 16, first leg, soccer match between Tottenham Hotspur and Dinamo Zagreb at the Tottenham Hotspur Stadium in London, England, Thursday, March 11, 2021. (AP photo/Alastair Grant, Pool)

Tottenham's Son Heung-min controls the ball in front of Dinamo Zagreb's Bruno Petkovic, right, during the Europa League round of 16, first leg, soccer match between Tottenham Hotspur and Dinamo Zagreb at the Tottenham Hotspur Stadium in London, England, Thursday, March 11, 2021. (AP photo/Alastair Grant, Pool)

Tottenham's Son Heung-min, left, jokes with Crystal Palace's manager Roy Hodgson during the English Premier League soccer match between Tottenham Hotspur and Crystal Palace at the Tottenham Hotspur Stadium in London, Sunday, March 7, 2021. (John Walton/Pool via AP)