Gareth Bale will be monitored after suffering a minor ankle twist on his impressive return to Real Madrid's starting side, head coach Zidane Zidane confirmed on Wednesday.
Bale scored the opener in a 3-1 Copa del Rey win over Unionistas de Salamanca but was unable to continue beyond the 53rd minute midweek.
Wales star Bale, who has battled injury and illness this season, was making his first appearance since the La Liga victory against Getafe on January 4.
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"He's twisted his ankle a bit," Zidane said.