A tech journalist and cultural critic with over a decade of experience covering digital transformation and societal impacts.
When an 18-year-old creates club history in a pivotal Champions League tie against City, it inevitably draws acclaim and attention.
In only his first start in the tournament - and fifth game for the team - Thiago Pitarch made a strong impression as the 15-time European champions claimed a three-nil round of 16 first-leg advantage at the Santiago Bernabeu.
The young player, who also made his club debut in the qualifying round a month ago with a substitute appearance at Benfica, then helped Los Blancos overcome the English Premier League side in the midweek second leg to confirm a last eight place.
Aged 18 years old, the midfielder was the club's most youthful starter to begin two matches in the Champions League knockout stages, surpassing star Vinicius Jr's previous mark by 10 days.
The midfielder is the most recent to come through from the club's academy and is rapidly cementing himself as one of the manager's most promising young players.
He signed for Madrid from CD Leganes in 2023, having formerly spent time at Atletico and Getafe's youth teams, and starting out for the Juvenil C team, where he quickly made a positive impact.
He worked his way up to the B team and it was during a friendly match in which they played against the academy's first team, then managed by the former defender, where the youngster is said to have drawn the eye of the current Real boss, who took over from the previous coach in the new year.
Reports would later label the moment as "love at first sight," adding Pitarch excelled not only for his technical ability, but for the energy, character and determination he brought to the side.
In the summer of 2025, ex-manager Xabi Alonso invited Pitarch to practice with the senior squad and awarded him playing time during the warm-up matches.
Yet, it was Arbeloa's appointment that became the defining moment in his development as he was introduced as a second-half replacement in both ties against Benfica that set up the clash with Manchester City.
"I've dreamed of this every night before going to bed, the first day I started playing football, each day you go to train and every day you play a match," said Pitarch following his first appearance.
"I've just achieved my dream with the best team in the planet and in the top tournament."
Handed a first start in La Liga against Getafe - where he was for several seasons after arriving from Atleti in 2018 - he has kept his spot for the following four as injuries to Bellingham and Dani Ceballos provided an opening.
The teenager has seized it with displays that have defied his age and experience.
"He is a extremely fast footballer, and you can see what he's capable of," remarked Arbeloa. "He is incredibly energetic, with great stamina, work-rate and movement."
The player's mindset has also stood out to his manager.
"His standout trait is his personality," added he. "He always wants the ball, and even under pressure, he remains unfazed.
"I understand people are astonished to see him make his debut in a European fixture, but he is selected because I had total trust in him to do his normal game.
"Thiago will continue to get chances with the first team. It's a pleasure to have a player like him."
Pitarch was born in a Madrid suburb, in the Madrid region, and was raised deeply involved in Spanish football, moving through local academies before entering the club's famous youth academy.
He holds both Spanish and Moroccan nationality, offering him the option to represent either country at senior international level.
Under international regulations, players may appear for different countries at junior level without being locked in, with the ultimate choice only binding once they play in a competitive senior international match.
He has played for Spain at underage levels, turning out for both the under-19 and under-20 sides, and took part in the 2025 Fifa Under-20 World Cup, where La Roja reached the last eight.
Nevertheless, he has yet to commit to any full national side, who are watching his rise with interest.
Speaking recently, Pitarch said: "I have not taken my ultimate choice so far. My situation is great with Spain, but I will reach a decision soon."
This scenario mirrors that of other bi-national talents such as club colleague Brahim Diaz and Barcelona forward Lamine Yamal. While 18-year-old Lamine opted for Spain, Diaz opted to represent Morocco.
For now, Pitarch's focus is on making his mark in the Real side and rewarding his manager's belief.
He played over an hour in the 2-1 victory at the Etihad, which completed a 5-1 overall triumph and a last-eight matchup with the German champions.
He was replaced by fellow youth graduate in Angel underscored the coach's confidence in the next generation to help the team pursue trophies to come.
Following his notable contributions to date on European football's biggest stage, Pitarch is expected to be a central figure in that.
"Arbeloa handles me the same. We deal with it very naturally. I attempt not to overanalyze it too much - I must earn my minutes on the field," he commented after the success at Etihad Stadium.
A tech journalist and cultural critic with over a decade of experience covering digital transformation and societal impacts.