Michael Dawson sustained a broken nose in the 2-2 draw with Boca Juniors in Suwon on Saturday.
The central defender suffered the injury in a second half collision and will miss the remaining games of the South Korea tour.
"He will be out for the rest of the tournament and that is a blow to us," said Martin Jol after the game. "I think he was doing well and looked good in his pairing with Ledley.
"We will have to wait and see, hopefully he will be fit in a couple of weeks."
Ledley was also withdrawn after 75 minutes but Martin reports it was simply a precaution.
"Ledley had cramp and it was better to take him off and not take any risks," added the Head Coach.