Empty Dossiers in Youth Scouting: The Line Between Patience and Speculation

For three weeks, I filled four boxes on the same notebook page: a top speed of 31.4 km/h, 22 accelerations above 25 km/h per match, 780 metres of sprint distance, and an 84% pass-completion rate in the U17 Bundesliga. In the fourth week, the sixteen-year-old vanished from the matchday squad. The page was still there, but every box after that was empty. No injury note, no explanation from the coaching staff, not one line.

I sat with that silence for a long time. Scouting taught me that bad data rarely ends a career. The urge to fill a void does.

In any major academy, every young player exists alongside a parallel file. A medical file, a physical file, a technical file, a psychological file. And there is one column few people look at directly: the column recording what we do not yet know. At Bayern Munich, where I have worked as a player development consultant since 2026, that column is usually left blank. Nobody wants to submit a report carrying the words "insufficient data". People want a verdict.

That runs against how data operates in modern football. A single Bundesliga match generates hundreds of thousands of positional data points. GPS systems record every stride. The paradox is this: the more data there is, the easier it becomes to believe you understand everything. When a metric is missing, people interpolate. When a match has no numbers, they record it by feel.

I audited that habit in myself, and the result forced me to change how I write reports.

An empty dossier is not proof that talent does not exist; it is only proof that the observer has not been patient enough.

The 2026 story is still in my drawer. Lukas Werner, sixteen years old, a central midfielder. Conventional data showed a 78% pass-completion rate in the U17 Bundesliga, average and unremarkable. The GPS metrics showed something else: his top speed reached 28 km/h, below the team average. I withheld my recommendation and refused to push for his promotion to the U19 side. The coaching staff objected. That summer, Werner moved to the RB Leipzig academy.

I once thought I had read the file correctly. Years later, cross-checking it, I realised I had read the numbers correctly but understood them wrongly. A top speed of 28 km/h measured in one specific match, one in which he played ninety minutes in a defensive shape, says nothing about his sprint speed in a counter-attack. I took a small sample and turned it into a lifetime verdict.

Every layer of sediment tells a story, if we are willing to dig. With Werner, I stopped digging at the topsoil.

It was at the 2026 World Cup in Russia that I understood the scale of that mistake. On 30 June 2026, in Kazan, nineteen-year-old Kylian Mbappé threw Argentina's defence into chaos in the round of sixteen, which France won 4-3. He scored four goals across the tournament.

I did not see it as a magical moment. I reopened the old files and found something that chilled me: Werner and Mbappé shared the same underlying data profile. Good technique, explosive acceleration, and physical capacity dismissed by conventional evaluation methods.

I immediately analysed the list of 19 players under twenty who started in the knockout rounds of that tournament. Fourteen of them had been rejected by German academies, mostly for physical reasons. That is close to three quarters. I wrote a forty-page internal memo bluntly admitting the limits of my own evaluation method.

I tell this story to point at a systemic error in youth scouting: we measure with objects, but we judge with gaps.

When a young player goes three matches without standing out, the "potential" column in his file goes empty. When he is pushed down to the second team, the "outlook" column goes empty. Those gaps do not produce conclusions on their own. The person writing the report produces them, usually on the night before the deadline, with two hours left and one promotion slot to fill.

I do not trust my eyes; I trust what the record leaves behind. The problem is that a record can also lie through its silence.

So what should be done with an empty box?

I used to write "insufficient basis for assessment, recommend continued monitoring". That phrasing is honest and useless. The coaching staff set the report aside, recruitment moved on, and the default decision became "nothing noteworthy here". In youth football, the silent default almost always means being cut.

After 2026, I changed the procedure. Every time I face a gap, I record three things. First, where the gap is and what caused it. Second, which data could close it within the next two weeks rather than the next two years. Third, which hypothesis holds if the gap is never closed.

That approach turns a blank box into a concrete task. This is discipline, not leniency.

This is also where I differ from most modern scouting reports.

The football data industry sells us a feeling of safety. Composite metric tables, probability models, dual indices. Everything looks precise to the decimal. But I have never seen a data table that states it is missing information. Someone has to ask.

At fifty-five, I have sharply reduced my use of composite indices in reports submitted to academies. I have gone back to the most basic things: speed, distance, pass-completion rate, minutes played. Three independently verifiable metrics per assessment. And one mandatory question at the foot of every report: does this data reflect the player's real potential, or merely one specific moment?

A conservative decision can bury talent, but it keeps the foundation from collapsing. The line between conservative and defensive runs here: the conservative waits for more evidence, the defensive waits for the gap to disappear on its own. The conservative goes back to dig the next layer. The defensive plants a sign reading "finished" and walks away.

I was defensive without knowing it. That is what I have to grade myself on every year.

At fifty-three I moved from writing reports myself to teaching others to write them. I left the writer's chair not because I ran out of ideas, but because I realised that the discipline of observation cannot be carried by one person forever. It has to become a process.

My first trainee asked a question that made me pause: "When a player has no standout metric, how do we know he has potential?"

I answered: "We don't. And the first thing to do is write exactly those three words into the report."

Old files never die; they simply wait for someone patient enough to reread them. The trouble is that the reader cannot be in a hurry.

Youth is a geological layer not yet excavated; do not pour concrete over it. Every season, academies across Europe discard hundreds of players because of gaps in their files that might have needed only three more weeks of observation to fill. Among the names struck through, how many carried an underlying data profile like Mbappé's?

I have no answer to that question. But I know one thing for certain: nobody can answer it while their files remain empty, and nobody is rereading them.

Tonight I reopened my notebook page from November 2026. The four numbers are still there, neat. Below them is the blank space I once intended to fill with a conclusion. I did not fill it. Looking back, I think I was right about at least half: right to leave it empty, wrong not to interrogate it for the two years that followed.

The season ahead is long, and scouts are sitting somewhere right now, in front of screens, with unfilled boxes. What I want to remind them of lies elsewhere than in the numbers. A young player can shine for ninety minutes, and that proves nothing about the next five years. But a gap in a file can end his career before it begins.

If tonight you must submit a report on a sixteen-year-old you do not yet understand, write the truth. A gap, once recorded, becomes a debt that can be repaid. Filled with speculation, it becomes a destiny.