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Arsenal Hit by Double Injury Blow Ahead of Crucial Chelsea Derby

Arsenal Hit by Double Injury Blow Ahead of Crucial Chelsea Derby

Arthur Jones
Arthur Jones
Published: Sep 3, 2026

Mikel Arteta is facing a selection headache ahead of Arsenal's high-stakes London derby against Chelsea this weekend. The Gunners boss saw two key first-team players absent from Thursday's preparations as the squad gear up for the Emirates clash.

The Emirates is buzzing, but a dark cloud of injury concern hangs over Arsenal as they prepare for a titanic London derby against Chelsea. With key figures Bruno Guimaraes and Cristhian Mosquera notably absent from Thursday's training, manager Mikel Arteta faces a significant headache just days before a crucial early-season showdown.

Key Injury Concerns for Arsenal:

  • Bruno Guimaraes continues to struggle with a persistent groin issue
  • Cristhian Mosquera is a major doubt after being forced off against Aston Villa
  • Arsenal’s defensive depth is stretched with Jurrien Timber and William Saliba also sidelined
  • Arsenal and Chelsea both enter the derby with two wins from two Premier League games

Gunners Rocked by Key Absences Ahead of Derby

The usually lively atmosphere at London Colney was dampened on Thursday as Bruno Guimaraes and Cristhian Mosquera were both absent from an open training session. The double injury concern comes at a difficult time for Arsenal, with the Gunners preparing to face Chelsea in a crucial early-season London derby.

Arsenal are looking to maintain their perfect Premier League start against their London rivals, but uncertainty over the availability of two important players has added another layer of tension ahead of the fixture.

Guimaraes Still Battling Groin Problem

Arsenal’s £75 million summer signing, Bruno Guimaraes, continues to deal with a groin problem that has troubled him since his arrival from Newcastle United. The midfielder managed just 19 minutes against Aston Villa, and his absence from full training suggests Mikel Arteta is taking a cautious approach with his latest marquee signing.

Although Arsenal have plenty of options in midfield, losing a player of Guimaraes’ quality would still affect Arteta’s tactical choices and the team’s ability to control the midfield against a dynamic Chelsea side.

Mosquera Injury Raises Defensive Concerns

The situation surrounding Cristhian Mosquera could be even more concerning. The young Spanish defender was substituted as a “safety measure” during Arsenal’s win over Aston Villa.

However, his absence from Thursday’s training session suggests the knock may be more serious than initially indicated by Arteta. If Mosquera is unavailable, Arteta will have another difficult decision to make in a backline that is already dealing with several injury concerns.

Arteta Faces Defensive Selection Headache

Mosquera’s setback comes at an especially unfortunate time for Arsenal. The squad is already without Jurrien Timber, who remains a doubt, while the long-term absence of William Saliba, exacerbated during the World Cup, has further reduced Arteta’s defensive options.

With Chelsea possessing plenty of attacking threat, Arsenal will need to find the right combination at the back to maintain their defensive stability in what could be a high-pressure encounter.

Konsa Ready for Emirates Debut?

Should Mosquera be ruled out, recent £51 million signing Ezri Konsa could be the natural option to step into the defence. The former Aston Villa defender replaced Mosquera in the 79th minute during the win over his former club and now appears in line for his full Emirates debut.

Konsa’s ability to settle quickly and form an effective partnership with his defensive teammates could prove crucial in a fixture of this magnitude.

Chelsea Derby Carries Huge Early-Season Stakes

This London derby is about more than bragging rights, with both teams fighting for early Premier League supremacy. Arsenal and Xabi Alonso’s Chelsea have both made perfect starts, securing two wins from their opening two fixtures.

The Gunners impressed with a 3-0 victory over Coventry City before grinding out a 1-0 win against Aston Villa. Chelsea, meanwhile, have showcased their attacking quality with a 3-2 triumph over Fulham followed by a thrilling 4-3 victory against Brighton.

With both sides entering the clash unbeaten, the stage is set for a major early-season showdown. For Arteta, however, the immediate priority will be solving his defensive puzzle and assessing whether Guimaraes and Mosquera can recover in time.