Real Madrid could be without left-back, Marcelo when they take on Paris Saint-Germain in their Champions League opener at Parc des Princes on Wednesday.
Marcelo was diagnosed with a post-traumatic cervicodorsal injury on Monday.
Real Madrid made this known in a statement on their official website on Monday.
"After the tests carried out today on our player Marcelo by the Real Madrid Medical Services, he has been diagnosed with a post-traumatic cervicodorsal injury.
"His recovery will continue to be assessed," the statement read.
Real Madrid head to the game following a 3-2 victory against Levante over the weekend.