Tyler Adams was forced to miss U.S. men’s national team duty due to a hamstring injury and is reportedly now expected to miss ample time for Leeds United.

Adams underwent surgery on Tuesday to repair his hamstring, which will keep him sidelined into the near future, The Athletic reported Tuesday. No official timetable has been announced by Leeds United manager Javi Gracia as the Lilywhites prepare for their resumption of English Premier League play this weekend.

“Tyler, we’ll see,” Gracia said Thursday. “After the surgery, we’ll see if he can play any games this season.”

The 24-year-old suffered the injury in preparation for Leeds’ 4-2 league win over Wolves on March 18 which forced him to miss USMNT duty this month. The USMNT proceeded to defeat Grenada 7-1 and El Salvador 1-0, punching its ticket into the Concacaf Nations League Final Four this summer.

Adams joined Leeds United last summer from RB Leipzig and has been one of the club’s top players during a hugely disappointing campaign. He has made 26 combined appearances for Leeds United, teaming up with fellow USMNT midfielders Weston McKennie and Brenden Aaronson.

Leeds United sits 14th in the EPL table, two points clear of the relegation zone heading into Saturday’s trip to league-leaders Arsenal. Should Adams have to miss the remainder of the league season, it would provide a major blow to Gracia’s midfield going forward.