Lionel Messi is dealing with muscle fatigue in his left hamstring less than three weeks before the ​start of the World Cup, Inter Miami said ‌on Monday after the Argentine forward was forced off in his final club match before the tournament.

Messi, 38, left Sunday’s 6-4 Major ​League Soccer victory over the Philadelphia Union in ​the 73rd minute after clutching the back of his thigh following a free kick.

“After undergoing further medical ​tests this Monday, the initial diagnosis indicates an overload associated ​with muscle fatigue in his left hamstring,” Inter Miami said in a statement.

“The timeline for his return to physical activity will depend ​on his clinical and functional progress.”

Inter Miami coach Guillermo ​Hoyos had downplayed the issue after the match, saying Messi appeared ‌fatigued after playing on a “heavy” pitch.

Major League Soccer is now pausing for the World Cup, which will be co-hosted by the United States, Canada and Mexico from June 11 to ​July 19.

Argentina ​coach Lionel Scaloni included eight-times Ballon d’Or winner Messi in a provisional 55-man squad announced earlier this ​month, ahead of the defending champions’ opening ​match against Algeria in Kansas City on June 16.

Messi captained Argentina to their third World Cup title in Qatar in 2022 and ​is expected to lead the team ​again in what could be his sixth appearance at the tournament.