The Madrid club are also down in fourth position in La Liga – eight points off the league leaders Barcelona having dropped points in six of their 14 matches during the 2017-18 campaign.
Gareth Bale’s injury problems and the summer exits of James Rodriguez and Alvaro Morata have left Real Madrid short of options in the final third of the field.
Zidane has admitted that “there is a possibility” that Real Madrid will enter the winter market as they look to battle for three trophies in the second half of the campaign.
“There is a possibility we will do business. From January 1 to January 31, we can sign players. We’ll have to see what happens, we have this opportunity every year and we always take stock and see what’s possible,” Zidane told reporters.