The 25-year-old goalkeeper is expecting stern opposition when the Blancos travel to Balaidos for the first leg of their Copa del Rey round of 16 encounter on Wednesday
The 25-year-old is expecting tough opposition in their round of 16, Copa del Rey encounter, and has demanded concentration from his team-mates.
"We have to be extremely focused, above all in the match in Vigo since they play well and are strong on their home pitch," Adan told Bwin's website.
"We have to leave with a good outcome so we can then play at home before our fans, on our pitch, which is in our favour.
"The priority is to get a good result in Vigo so that we can have an advantage coming into the game at the [Santiago] Bernabeu. I'd settle for a win and for me finishing the game with no goals against Real would be much better."
And with league outings few and far between, Adan is hopeful of making the most of his opportunity to shine and says the competition is just as important as any other in the eyes of the squad.
"All the players here think about winning trophies each season. Winning the Copa del Rey would be really great for us because it's a special competition and a fans' favourite," he added.
"For us it's like any other competition and all the better if we win it."