Chelsea's 3-4-3 Formation: Success or Work in Progress? (2026)

Chelsea's pre-season finale against Real Sociedad was a mixed bag, with Xabi Alonso's side displaying both promise and potential pitfalls. The 3-4-3 formation, a nod to Alonso's Leverkusen days, was once again the focus, but the execution left much to be desired.

Personally, I think the 3-4-3 is an intriguing concept, but it requires a squad with the right balance of technical ability and physicality. Chelsea's wing-backs, Marco Palestra and Pedro Neto, struggled to contain Real Sociedad's wide players, and this is where the formation's fluidity could be a double-edged sword. It allows for dynamic movement, but it also means the wing-backs must be able to adapt quickly to changing situations, something that was not fully realized in the first half.

One thing that immediately stands out is the need for a more robust central defense. Maxence Lacroix, a solid performer at center-back, was forced to play wide due to the fluidity of the system, and this exposed Chelsea to counter-attacks. The back three dominated the ball on the halfway line in the second half, but the initial issues with depth and pressing were evident.

Enzo Fernandez's introduction as a substitute was a curious moment. The boos and cheers from the crowd highlighted the complex emotions surrounding his potential move to Manchester City. From my perspective, it's clear that Fernandez is a key player for Chelsea, and his performance on the pitch will be the best way to win over the fans. The transfer links with City have created a divide, but his presence on the pitch will unite the support.

Joao Pedro's performance was a bright spot, but it also raises questions about Chelsea's striker options. With Nicolas Jackson and Liam Delap absent, Pedro was the only recognized striker, and his red-hot form heading into the new season is a welcome sight. However, the lack of depth in this area is a concern, and it's clear that Chelsea needs to address this issue.

In my opinion, the 3-4-3 is a work in progress, and Alonso has the flexibility to adapt. The formation's success will depend on the squad's ability to execute the fluidity and pressing intensity required. As the season progresses, we will see if Chelsea can find the right balance and if the back three can become a solid foundation for the team.

One detail that I find especially interesting is the impact of the squad's depth on the formation's success. With limited options in key areas, Chelsea must rely on players like Pedro to carry the load. This raises a deeper question: how will the team adapt if key players are unavailable due to injury or transfer? The answer lies in the squad's ability to step up and fill the gaps, and this will be a crucial test as the season unfolds.

Chelsea's 3-4-3 Formation: Success or Work in Progress? (2026)
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