Güler is considered one of the most promising young players in the world, and a strong performance against FC Barcelona would take his popularity to the next level. Although he has only played twice against Barça in his career, he is eager to showcase his skills in front of the Bernabéu crowd.

Fermín López, a 22-year-old La Masia academy graduate, has made a significant impact since bursting onto the scene in a pre-season friendly against Real Madrid. He scored a goal and assisted another in a 3-0 Barça victory, earning him a spot in the first-team squad. López has been recovering from an injury, but he has a chance to start in this weekend's game and is looking to build on his recent performance against Valencia CF, where he scored two goals.

López has limited experience in El Clásico, with his most playing time in the fixture being 55 minutes last season. He hopes to earn more minutes this weekend and showcase his skills.

Franco Mastantuono, an 18-year-old Argentinian, was linked with a move to FC Barcelona before joining Real Madrid. Now, he faces the club where his idol Lionel Messi achieved so much. Mastantuono will be eager to prove himself in this high-profile match, even if he doesn't start.

Substitutes have often decided the outcome of El Clásico in the past, and Mastantuono could become an instant hero if he scores at the Bernabéu this weekend.