Ezri Konsa will miss this month’s game against Plymouth after being called up to the England Under-20s squad.
He is the second Charlton player to be ruled out of the clash with Josh Magennis set to report for Northern Ireland duty.
Konsa and Magennis have been consistently picked by Karl Robinson this season, so the Addicks manager will be forced to shuffle his pack.
Promotion rivals Plymouth travel to the Valley in red hot form having lost just one league game since November.
MORE: Karl Robinson on how many points Charlton need to finish in top six
Jay Dasilva would have been Charlton’s third player on international duty (England U20s), but the left-back is injured with an ankle problem.
Clubs can only postpone a match if three or more players are chosen to play for their respective countries.
The Addicks are unlikely to receive any more international call-ups which means the Plymouth game is set to go ahead on March 24.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here