Fulham midfielder Joao Palhinha may have dislocated his shoulder and will have a scan on Monday to find out the extent of the damage, manager Marco Silva says.
The Portuguese was a late substitute in Fulham’s 3-2 Premier League Summer Series opener win over Brentford in Philadelphia on Sunday.
The 28-year-old left the field with his arm resting on a sling from his shirt.
“Unfortunately it doesn’t look good,” said Fulham coach Silva.
“He’s probably dislocated his shoulder. Tomorrow he’ll have a scan and it will be clearer. Let’s hope it’s not another long-term injury for us.”
On Saturday, Silva said Palhinha had been the subject of interest from other clubs, with Liverpool and West Ham rumored to be monitoring the player.
Fulham took the lead in Sunday’s game at Lincoln Financial Field when Harry Wilson curled into the top corner from the right side of the penalty area.
Brentford equalized through Yoane Wissa before Bryan Mbeumo hit the post from the edge of the box.
Bobby Decordova-Reid restored Fulham’s lead with an effort from the edge of the box before Carlos Vinicius added a third.
Brentford defender Kristoffer Ajer then scored from inside the box to make it 3-2.
Brentford face Brighton in Atlanta before Fulham play Aston Villa in Orlando in their next six-team Summer Series.