As Thomas Meunier and Juan Bernat capered through the open savannah that archaeologists believe was once populated by the Real Madrid midfield, the mind was drawn to another Parisian night two and a half years ago, when Ángel Di María orchestrated an even more emphatic victory for Paris Saint-Germain over a Spanish side. As it turned out, that 4-0 win over Barcelona didn’t turn out particularly well for PSG but, more generally, what on earth is going on with midfields in La Liga?

On a night when Atlético twice conceded goals on the break at home to Juventus, the issue seems particularly acute. Last season the big three Spanish sides leaked three or more in games against Liverpool (Barcelona); CSKA Moscow and Ajax (Real Madrid); and Borussia Dortmund and Juventus (Atlético). In each case the major problem was the same: a ponderous midfield being shredded in transition. There had been glimmers of the issue the season before, in Real Madrid’s defeat at Tottenham and Barcelona’s embarrassing collapse in Rome, which itself had been foreshadowed by the problems they’d had against Chelsea in the previous round.

Ángel Di María double helps PSG ease to win against Real Madrid Read more

In that sense Di María, a player who carries the ball on the counter as well as anybody in world football, is kryptonite to a Spanish midfield – or even, as Bayern found when Di María, still playing for Madrid, devastated them, to a midfield managed by a Spaniard. The sense lingers that Di María never quite gets the credit he deserves.

Although his contract demands were perhaps excessive, Madrid might have made more effort to keep hold of him had he been more obviously charismatic and not borne such a striking resemblance to Franz Kafka. Di María’s time at Manchester United was scuppered by the wider sweep of the club’s decline and struggles with settling in, exacerbated by a burglary at his home. With Argentina, he is a useful scapegoat, largely because he is almost always there, coaches liking his diligence even though the team, not unreasonably focused on Lionel Messi, rarely play in a way that would get the best out of him.

With PSG, Di María is overshadowed by the star quality of Neymar, Kylian Mbappé and Edinson Cavani. Not for the first time, it was apparent without the three on Wednesday how much better they are when the celebrity worship is toned down and they function as a team. That said, Madrid did everything they could to make it easy for them.

The one-two that released Bernat in the buildup to the first goal was neat, but was it really enough to bypass Dani Carvajal that straightforwardly? Raphaël Varane was then drawn towards the full-back, leaving a huge gap for Di María to move into as Éder Militão, who had a dreadful game, failed to cover. Di María’s strike for the second was powerful and accurate but why was he afforded so much room five yards outside the box? These are basics of defending. By the time of the third, Madrid’s midfield had collapsed completely.

Facebook Twitter Pinterest Toni Kroos, right, played in Paris like a man ‘a decade older than his 29 years’. Photograph: Soccrates Images/Getty Images

Drawing general conclusions is never without risk, and both Madrid and Barça have had problems refreshing ageing midfields (Frenkie de Jong should help), but there is a question of how both have been allowed to sink into such decadence. Why have La Liga sides not exploited more such obvious deficiencies in midfield? Perhaps the gulf in resources, and the psychological barriers that erects, are simply too great; perhaps towards the end of last season, opponents had begun to expose Madrid.

There may also, though, be a sense of the evolutionary wheel turning. The possession-oriented game of a decade ago has slowly yielded to something quicker and more rooted in the construction of rapid transitions. Success often breeds stagnation – why change something that works? It may be that after so much success – six Champions Leagues in the past nine years – Spanish football has slipped back into the pack.

Given how profound Madrid’s issues appear, Barça and Atlético will be the real test of that. Zinedine Zidane’s success as a manager, winning three successive Champions Leagues, always seemed a little freakish, the result less of any great tactical acumen – important as his substitutions often were – than of a talented squad that effectively ran itself, elevated by the goalscoring of Cristiano Ronaldo and capable of peaking at just the right moment.

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The surgery Zidane demanded on his return has not happened and the result is a slow midfield that, with little support from a detached forward line, could not cope with a PSG side that, with Marquinhos, Idrissa Gueye and Marco Verratti together in the middle, played with real energy and aggression. Even in the good days, Casemiro sometimes struggled to hold the bridge alone. Here, with James Rodríguez weirdly uninvolved and Toni Kroos looking a decade older than his 29 years, he was overwhelmed.

Perhaps when Sergio Ramos returns from suspension, Madrid will do what they have in the past and raise themselves for the knockouts, borne by some deep-rooted muscle memory of past successes. But this was a troubling display, flaccid and unfocused. A bunch of ageing stars yoked loosely together for one last job may play well for some content producers but football still requires at least some zest, some organisation. This was a Madrid side seemingly incapable even of the basics.

PSG, meanwhile, shorn of their stars, looked a team at last.