West Bromwich Albion winger Matt Phillips is unlikely to play again this season as he needs surgery on an injured quad muscle.
A consultant recommended surgery and three to four months of recovery.
"He will have [surgery] on Saturday," said Albion manager Carlos Corberan. "Probably it will be difficult for him to come back this season."
Corberan, who takes his side to Bristol City for an FA Cup fourth-round tie this weekend, will also be missing Kyle Bartley, who will return to action with the B team on Friday.
Bartley's comeback from a lengthy thigh injury was delayed by a further setback, but his return is greeted by Corberan as "a positive".