The Brazilian left-back is optimistic that Real Madrid can turn the cup tie around at the Bernabeu and was impressed by his side's showing against Barcelona
Speaking to TVE after his side's 3-2 Clasico defeat at Camp Nou, the Brazilian left-back was pleased with Los Blancos' performance and believes his side have the advantage going into the return leg.
"We ran all the time. We played the ball on the ground. We conceded three goals but we can count on the support of the fans to win at the Bernabeu.
"It's completely open, but we have to work and concentrate on the match because it will be very hard."
The second leg of the Supercopa kicks off at 20:30 UTC on Wednesday.