What happened: The caution applies to players converting club breakthroughs into senior international opportunities. Pochettino framed early success as something to manage, not proof of arrival.

Why it matters: The coach's contract runs through 2030, giving him a full cycle to shape the next generation. Upcoming matches against Mexico, Canada, Peru and Chile provide immediate evaluation points.

What to watch: The next camp roster will show which prospects move into his senior-team plans.