PSG’s Tactical Fluidity Unravels Slot’s Back-Five Experiment

Liverpool faces Paris St-Germain in the Champions League quarter-final’s second leg next Tuesday. Arne Slot’s decision to deploy a back-five formation against the European champions sparked significant debate. The tactic backfired in the first leg, resulting in a 2-0 loss that left Liverpool’s season in jeopardy. This shift was unexpected, as the team had only previously used a back-five in their Carabao Cup fourth-round defeat by Crystal Palace in October.

PSG dominated possession, controlling 74% of the game and registering 18 shots compared to Liverpool’s three. The Dutch coach’s strategy aimed to disrupt the French side’s rhythm, yet it proved insufficient. While Liverpool started with a back-five, they prioritized pressing high, even if it wasn’t always effective. PSG’s narrow frontline—comprising Ekitike, Szoboszlai, and Wirtz—operated between their defense and midfield, while the club adjusted by dropping one midfielder to form a makeshift back three.

Slot’s system required Liverpool’s midfield duo to counter PSG’s central players, and their wing-backs to track Hakimi and Mendes. However, PSG’s rotations exploited gaps. Full-backs Hakimi and Mendes advanced high, limiting Liverpool’s width. The French side’s attackers dropped deep, creating space behind Liverpool’s back three. This allowed PSG to play over the top, targeting areas where Konate and Frimpong were stretched.

“I thought we could try and press them really high and aggressive,” Slot remarked. “Every time we tried to press them high and aggressive, those were the moments we got ripped apart.”

Konate, typically a right-back, was tasked with supporting the press. His unfamiliar role left him vulnerable, especially when PSG’s attackers moved deep. A notable moment occurred when Hakimi cut inside from right-back, leaving Kerkez, a natural left-back, to trail awkwardly. Mendes then delivered a long pass, finding Hakimi unmarked. Frimpong’s efforts to press were hampered by the need to cover vast distances, while Konate struggled to close down space.

As the match unfolded, PSG capitalized on Liverpool’s defensive setup. Their attackers frequently shifted between deep and wide positions, overwhelming the midfield. Van Dijk, 34, was forced to shift across the center, often out of position. The fluidity of PSG’s play—marked by quick switches and overlapping runs—made it challenging for Liverpool to maintain balance. This adaptability exposed the vulnerabilities in Slot’s back-five plan, particularly in the final third.

Following the game, the Liverpool captain emphasized the tactical challenges faced. PSG’s ability to create overloads and exploit spaces behind the back three highlighted the effectiveness of their approach. Slot’s experiment, though bold, underscored the difficulty of counteracting a team renowned for its attacking cohesion and movement.