Bolton defender Marcos Alonso is expecting to be out for several weeks with a foot injury.
The Spanish left-back joined the Trotters last year from Real Madrid but he has only started eight games during that period.
But he revealed on Twitter on Thursday night that he has broken a metatarsal.
"I broke my fifth metatarsal yesterday. Having surgery soon will be out for about 6-8 weeks. Trying to be positive."
However, Bolton are yet to confirm the injury.