A football club (known as soccer in the United States) can spend €100 million ($111 million USD) on a player and still have a worse squad in September. If this sounds a little ridiculous, just look at what actually happens during a summer transfer window.
A new striker might solve the scoring problem, sure. But they can also create a wage problem, causing friction in the dressing room (to put it mildly). Likewise, a young midfielder might look like a bargain until it becomes obvious there is no room for him on the Champions League squad list. And that veteran everyone wants to sell? His contract may make him surprisingly difficult to move.
So yes, for Europe’s biggest clubs, summer is not just transfer season. It is roster surgery.
It starts with deciding what’s actually broken
The obvious approach is to look at the previous season and ask which positions need new players. It makes sense on the surface, but top clubs go deeper than that.
Was the midfield actually weak, or did injuries expose a lack of depth? Did the team need another center-back, or did the manager simply distrust the ones he had? And, perhaps, an uncomfortable but necessary question: Is an aging star still useful, even if he no longer starts every week?
All these answers shape the recruitment plan. Age, injury record, wages, contract length, and tactical fit all matter. Resale value, too. A 30-year-old might be the perfect fit for next season, but a 21-year-old could make more sense if the club expects to keep or sell him over a five-year horizon.
This is why a transfer that looks standard or even boring can be extremely important. Replacing an unreliable backup goalkeeper is not going to dominate social media, but it can solve a structural vulnerability.
Selling players is half the rebuild
Outgoings get far less attention because “club sells backup left-back” rarely makes headline news. Still, Europe’s giants need departures to make room for new arrivals. Players leave permanently, go on loan, return from loan spells, terminate contracts, or simply become part of the squad’s fringe.
Loans are particularly useful for younger talents. A 20-year-old who cannot get regular playing time at Bayern Munich or Real Madrid may develop more by playing 35 matches somewhere else than by spending a year on the bench.
There is a financial angle, too. UEFA’s accounting rules allow transfer purchase costs to be spread across the length of a player’s contract rather than recorded as one immediate expense (amortization). Loan arrangements have their own accounting treatment as well.
So, the headline transfer fee does not tell you the whole story. Not even close.
The wage bill can kill a good-looking transfer
UEFA’s Squad Cost Rule limits relevant spending on player and coach wages, transfers and agents to 70% of a club’s relevant revenue. The rule applies permanently from the 2025/26 season, which means clubs cannot simply spend their way out of every squad problem. As you can probably deduce, this changes recruitment decisions.
A famous 29-year-old on enormous wages may be brilliant for two seasons. A younger player with a lower salary might offer less immediate certainty but greater long-term value. Neither choice is automatically right, though; the club has to decide what it can live with financially.
Barcelona’s recent struggles are a good reminder that sporting ambition and financial reality do not always cooperate. Real Madrid has more room to maneuver, but even Madrid cannot ignore wages, contracts and squad balance.
For a closer look at how those two giants are dealing with their respective rebuild questions, you can read more on Latin Nation.
Then UEFA registration rules step in
There is another catch: you cannot simply buy 30 players and put all of them into your Champions League squad. For the 2026/27 Champions League, UEFA permits a maximum of 25 players on List A. At least eight places must go to locally trained players, and a club that does not meet that requirement has its List A limit reduced.
It’s a rule that can produce some strange-looking decisions. For instance, a club might want another experienced foreign defender but decide against the deal because registering him would force another player out. Meanwhile, an academy graduate who seemed like a peripheral figure in July can suddenly become useful because he fills a locally trained slot.
Squad building is not FIFA Career Mode. There are rules, and they do bite.
Why big clubs rarely rebuild everything at once
Even a club requiring a massive overhaul rarely replaces half its squad in a single window (without destabilizing team cohesion). Managers typically prioritize the core “spine” first: a center-back, a central midfielder, and a primary striker.
Younger players can arrive for depth, and existing players get another chance. Others leave when suitable offers appear.
The transfer market itself also creates delays. One deal can depend on another club selling a player first. A target might become available late in the window. Of course, a player can also change his mind. Football executives, despite the suits and spreadsheets, do not control every variable.
UEFA data shows that top-tier European clubs averaged 9.3 senior signings during the 2025 summer window, showing just how much movement can happen without every club undergoing a complete rebuild.
Now, nine signings may sound like a complete overhaul, but it often represents routine squad maintenance. A club could make nine additions because it needs depth, youth, and replacements for outgoing players, rather than because everything has gone terribly wrong.
When transfer deadlines dominate the news cycle, it is easy to measure success by headline fees and star power. But elite squad building is practically never a shopping spree: it is an exercise in calculated compromise.
This content is provided for informational purposes only and is not a substitute for professional advice. AFP editorial staff were not involved in the creation of this content.
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