Son Heung-min will undergo surgery on his fractured arm on Friday and could miss a large part of Tottenham's pre-season preparations for the 2017-18 Premier League campaign.
The forward sustained the injury during South Korea's 3-2 loss to Qatar in World Cup qualifying on Tuesday. Son, 24, was substituted and went down the tunnel to receive treatment after landing heavily on his arm in the 34th minute in Doha.
The former Bayer Leverkusen star, who scored 21 goals in 47 appearances last term, underwent further assessments with the national team and Tottenham have confirmed those scans have revealed a fracture of his forearm.
He will have an operation to correct the problem on Friday, with Spurs medical staff keeping a close eye on him in the hope he will be able to have some match action before the start of the Premier League.
Mauricio Pochettino's side start their league campaign at Newcastle on August 12 and host champions Chelsea the following week.