Fidel Escobar will miss two to three weeks following an injury he picked up with the Panamanian National Team.
"It's two to three weeks," Jesse Marsch said. "Obviously unfortunate, we thought that he was getting fit and playing well."
Escobar started and played 90 minutes with Panama against Denmark.
Escobar started two times for the Red Bulls in MLS this season, logging 169 minutes.
"It's not too long," Marsch said. "We'll get him back here, get him healthy and get him going again."