Jay Dasilva has returned to Chelsea for treatment after suffering an ankle injury while playing for Charlton.
The Blues youngster, who is on a season-long loan at the south London club, could be sidelined for up to six weeks.
He went off during the second half of Charlton’s defeat against Shrewsbury on Saturday and scans have revealed a significant sprain.
DaSilva, 19, has made 36 appearances for the Addicks this season.
He returned to The Valley after impressing while on loan there during the second half of last season.