Son Heung-Min could miss the start of Tottenham's pre-season preparations after his club revealed the South Korea forward will have surgery on his fractured arm on Friday.
Son suffered the injury after landing awkwardly following an aerial challenge during South Korea's World Cup qualifying defeat with Qatar on Tuesday.
Scans showed the 24-year-old sustained a fracture in his right forearm and he is set for an operation which could see him sidelined for at least four weeks.
Mauricio Pochettino's side return for pre-season training on July 3 before heading for a 10-day tour of America, with the first game on July 22.
Their Premier League opener is at Newcastle on the weekend of August 12-13.
"Heung-Min Son is to undergo surgery on his right forearm tomorrow (Friday)," a Tottenham statement read on Thursday.
"The South Korea international sustained the injury after landing on his arm during his national team's World Cup qualifying match against Qatar in Doha on Tuesday, with further assessment and scans confirming that he has sustained a fracture.
"Son will continue to be monitored by our medical staff ahead of a return to action next season."
Son scored 21 goals for Tottenham last season and was a key figure as they finished second in the Premier League.