Fulham midfielder Emerson Hyndman is set to miss up to six weeks after suffering a broken collarbone.
Sources have confirmed the injury to Goal USA, a setback that could hamper Hyndman's chances of regaining his starting role with English League Championship side Fulham.
Hyndman suffered the injury late in the U.S. Under-20 national team's World Cup qualifying victory against El Salvador on Saturday. Hyndman was one of the key figures in the U-20 team's successful World Cup qualifying campaign, anchoring the midfield and helping the Americans overcome a slow start in the qualifying tournament.
Hyndman, 18, could be sidelined until April, giving him just one month to prepare for the Under-20 World Cup, which begins in late May. He could be back in time to take part in a U.S. Under-20 national team camp slated for late March.
Hyndman will be heading into the final year of his contract with Fulham this summer, and could make a move, as clubs from Spain and Germany have expressed interesting in acquiring the FC Dallas youth academy product. La Liga side Elche was among the teams to make a transfer bid for Hyndman last summer.