Deportivo La Coruna spent the final day of the window doing what deadline-day clubs always do: chasing the one specific piece they could not find all summer. That piece is a left-footed center-back, and the name on the table is Jose Maria Gimenez, the long-serving Atletico Madrid defender whom the Madrid club is looking to move on. Sevilla are also reported to be interested in a player carrying a substantial salary.

The framing from Deportivo's sporting director, Fernando Soriano, was telling. He had described the squad as practically closed, and by most measures the summer was a heavy one, with Adama Traore among the marquee arrivals for a club back in the top flight. Their newest signing has already been registered with the league. And yet the search continued for that one profile they still lacked.

The complication is money and space. Deportivo do not have unlimited salary room, and the whole operation was tangled up in getting players out, an outgoing operation that dragged all summer. The departure of Charlie Patiño to Bochum freed room and gave the club its final push. That sequencing is the whole story: they could not add until they subtracted.

For US coaches, this is a clean look at how squads actually get built, which is rarely in the order you would draw it up. You do not get to sign your ideal eleven and then relax. You fill what you can, you carry a hole you know about, and you keep working the phones for the specific missing profile right up to the buzzer.

The specific profile part matters. Deportivo did not want just any center-back. They wanted a left-footed one, because a left-sided center-back opens the pitch, plays more natural angles out of the back, and lets the whole build-up breathe. They had already brought in defenders and still felt the shape was unbalanced without that left foot. That is a coaching detail, not an accounting one.

Youth coaches feel this every roster cycle. You can have a good group and still be missing one profile that unbalances everything, a left-footed player, a true holding midfielder, a striker who holds the ball. The temptation is to sign the best available athlete and hope. The better clubs, like Deportivo here, hold out for the profile that actually completes the shape.

There is a man-management edge too. Gimenez is 31, expensive, and being pushed out of a club he served for years. When you recruit an experienced player who is being moved on rather than chased, you are getting someone who may be motivated to prove a point or may be winding down. Reading which one you are getting is as important as the scouting.

Whether or not the deal closed by the buzzer, the process is the lesson. Subtract to add, hold out for the exact profile that balances your group, and keep working the problem until the window shuts. Squads are finished at the deadline far more often than they are finished in July.