Bolton Wanderers defender Marcos Alonso is expected to be sidelined for up to 12 weeks due to a broken metatarsal.
Alonso suffered the injury during the Trotters' Carling Cup win over Macclesfield Town on Wednesday night and was substituted early in the second half.
The Spaniard was making his first start since April but joins a defensive injury list that includes Tyrone Mears, Sam Ricketts and Gretar Steinsson.
Trotters boss Owen Coyle has expressed his sympathy for Alonso, who was starting to press his claims for more regular inclusion in the team.
Coyle said: "Marcos has fractured a bone in his foot and he will have an operation this morning.
"He will be out for eight to 12 weeks, which is a real blow for him because he was starting to get to grips with the English game.
"He had a terrific pre-season and was pushing to try to get into the starting line-up."