Mikel Arteta has been handed two new Arsenal injury concerns before the Champions League clash against Monaco. Defensive issues were already plaguing Mikel Arteta, but now he could have six players absent against the French side that can play in his backline.
Takehiro Tomiyasu and Ben White are the long-term absentees with [Kieran Tierney recently returning from a lengthy lay-off.](https://www.football.london/arsenal-fc/news/breaking-mikel-arteta-confirms-arsenal-30555858) In terms of the more minor injury concerns, Gabriel Magalhaes and Riccardo Calafiori have missed the last two games and are still yet to return to training.
With that duo missing from Tuesday's session, [they were seemingly joined indoors by Thomas Partey and Jurrien Timber with Arteta's most recent full-back pair not spotted out on the grass at London Colney.](https://www.football.london/arsenal-fc/fixtures-results/breaking-arsenal-dealt-fresh-double-30552888) With that being said, **football.london** has taken a look at the latest Arsenal injury news and some potential return dates.
### Gabriel
**Injury:** Unknown
Gabriel Magalhaes came off early against West Ham in late November which has seen him be absent from the last two matchday squads. He picked up the initial issue that previous week against Sporting CP.
**What Arteta has said:** "We have to manage a lot of the players. Some of them probably aren’t going to be fit. Some are still a doubt. We have 24 hours to make a decision and hopefully it’ll be the right ones."
**Possible return date:** Everton (H) - Saturday, December 4
### Riccardo Calafiori
**Injury:** Unknown
Riccardo Calafiori was also taken off early in the 5-2 victory against West Ham and has not been able to feature since.
**What Arteta has said:** "We have to manage a lot of the players. Some of them probably aren’t going to be fit. Some are still a doubt. We have 24 hours to make a decision and hopefully it’ll be the right ones."
**Possible return date:** Everton (H) - Saturday, December 4
### Jurrien Timber
**Injury:** Unknown
Jurrien Timber was missing from Arsenal's open training session on Tuesday ahead of the Champions League clash against Monaco after playing the full 90 minutes against Fulham this past weekend.
**What Arteta has said:** "We have to manage a lot of the players. Some of them probably aren’t going to be fit. Some are still a doubt. We have 24 hours to make a decision and hopefully it’ll be the right ones."
**Possible return date:** Everton (H) - Saturday, December 4
### Thomas Partey
**Injury:** Unknown
Despite playing the entirety of the 1-1 draw with Fulham, like Timber, Thomas Partey was also a noticeable absentee from the training session held at London Colney on Tuesday afternoon.
**What Arteta has said:** "We have to manage a lot of the players. Some of them probably aren’t going to be fit. Some are still a doubt. We have 24 hours to make a decision and hopefully it’ll be the right ones."
**Possible return date:** Everton (H) - Saturday, December 4
### Ben White
**Injury:** Knee
Ben White underwent surgery during the November international break to fix an ongoing knee issue.
**What Arteta has said:** "Ben is going to be out for months. We had to make a decision in the last few weeks, unfortunately. It got to a point where we had to protect the player, and we decided to do the surgery."
**Possible return date:** January/February.
### Takehiro Tomiyasu
**Injury:** Knee
Takehiro Tomiyasu has played just seven minutes of the 2024/25 campaign with a knee injury currently keeping him out of action.
**What Arteta has said:** "Tomiyasu is going to be out for a bit. He's going away for a few weeks to change his environment because it's been really tough for him. We're going to give him the best opportunity to try and unlock something, but I think we need to be patient."
**Possible return date:** Unknown