Arsenal have reportedly been dealt a devastating injury setback, with William Saliba expected to undergo surgery on a persistent back problem that could keep him out for four to five months and potentially rule him out for the opening months of the 2026–27 season.

The France international aggravated the injury during France's World Cup semi-final defeat to Spain, lasting just 30 minutes before being forced off in visible discomfort. Reports suggest Saliba has been managing the issue throughout the tournament with a modified training programme and pain management, but surgery is now considered the most likely solution.

If the operation goes ahead, Arsenal could be without one of the world's best centre-backs until late 2026, creating a major selection headache for Mikel Arteta ahead of the new campaign. 

World Cup Injury Worsens Existing Problem

Saliba's injury did not appear to result from a heavy challenge.

Instead, the defender signalled that he could no longer continue before being substituted in the first half against Spain. According to multiple reports, the 25-year-old has been battling a chronic back issue for several weeks, with the pain worsening during France's World Cup campaign.

The setback also means Saliba is expected to miss France's third-place play-off against England as the focus shifts towards treatment and recovery.

Huge Blow for Arsenal

Losing Saliba for several months would represent a significant setback for Arsenal.

The French defender has become one of Mikel Arteta's most important players, forming one of the Premier League's strongest defensive partnerships and playing a key role in the club's recent success.

Reports suggest Arsenal are already assessing their defensive options should Saliba face a lengthy rehabilitation, with internal solutions and potential transfer-market activity both under consideration.

Recovery Timeline Remains Uncertain

Although surgery is reportedly the preferred option, Arsenal have not officially confirmed that Saliba will undergo the procedure.

The exact recovery period will depend on the outcome of further medical assessments, but current reports estimate an absence of around four to five months, putting the start of his domestic season in serious doubt. 

Expert Analysis: Why Saliba's Absence Could Transform Arsenal's Season

Few defenders are as important to their team as William Saliba is to Arsenal.

Since establishing himself as a first-team regular, the French international has become the cornerstone of Mikel Arteta's defence. His composure in possession, recovery pace, aerial dominance and ability to organise the back line have helped Arsenal become one of the Premier League's strongest defensive sides.

If Saliba is sidelined for four to five months, Arsenal will lose not only one of their best defenders but also a leader whose consistency has been crucial in high-pressure matches. (talkSPORT)

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Who Could Replace Him?

Should Saliba undergo surgery, Arteta will need to reshuffle his defensive options.

Ben White and Jakub Kiwior are capable of playing centrally, while Riccardo Calafiori can also provide cover depending on Arsenal's tactical setup. However, none offers exactly the same combination of pace, physicality and positional awareness that has made Saliba one of Europe's elite centre-backs.

The injury could also encourage Arsenal to enter the transfer market if the medical staff confirm a lengthy recovery period. Any decision would likely depend on the club's confidence in its current defensive depth and the availability of suitable targets.

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A Blow for Club and Country

The timing of the injury is particularly frustrating.

Saliba had been an integral part of France's run to the World Cup semi-finals before being forced off against Spain. Now, his focus shifts from competing on the international stage to recovering in time for Arsenal's domestic campaign.

For France, the defender is also expected to miss the third-place play-off, while Arsenal face the possibility of beginning the new season without one of their most influential players.

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Recovery Outlook

Back injuries can vary significantly in severity, meaning recovery timelines often depend on how the player responds after surgery.

Current reports suggest Saliba could be sidelined for four to five months, although Arsenal have not officially confirmed the operation or a definitive return date. The club is expected to provide a clearer update once further medical assessments have been completed. (Arseblog News)

If rehabilitation progresses well, Saliba could return before the end of 2026, but Arsenal will be cautious not to rush one of their most valuable assets.