The 19-year-old, who came through the youth system at Malaga, has also insisted that the club have put the 1-0 loss to Osasuna last time out behind them.
"We've put the Osasuna match behind us now, rectified our mistakes and are completely focused on Madrid. We've had some players away on international duty, but so have Real Madrid. It's crucial that we make the most out of every opportunity we have," Darder told the club's official website.
"Real Madrid have some top quality players, but if we focus on our style of play and ensure we maintain a solid defence, then I believe we'll have chances. The Bernabeu is such an exciting stadium, but at the end of the day it's just another match for us which we're determined to win."
Darder has seven Spanish Under-17 caps to his name.