Vazquez sustained the injury after dropping a dumbbell on his foot in the gym, according to reports in the Spanish press.

"After tests done today on our player Lucas Vazquez, the medical services of Real Madrid have diagnosed him with a fracture in the big toe of his left foot," read a club statement.

Madrid have not specified how long Vazquez will need to recover. 

The Spaniard had just returned from a calf injury, which had kept him out for almost six weeks.