West Ham United star Nayef Aguerd was forced off in Morocco's World Cup round of 16 win over Spain.

The North African nation picked up a remarkable result, earning a spot in the quarter final after a penalty shoot out.

However, Hammers fans will be concerned for Aguerd, who was substituted before full time.

The player was visibly distressed at having to come off with the problem.

It is unclear if he will be fit in time for Morocco to take on Portugal in the quarters on Saturday.