Arsenal injury update: Jurrien Timber, Cristhian Mosquera and Bruno Guimaraes latest news and return dates

Arsenal have emerged from their comeback win over Chelsea with some mixed news on the injury front as attentions shifts to the start of a new Champions League campaign.Elsewhere, Declan Rice shook off a knock to complete the full 90 minutes and Bruno Guimaraes was an unused substitute with Mikel Arteta deciding against taking any risks with his new £75million midfielder.Jurrien TimberJurrien Timber is yet to feature this season after undergoing minor surgery over the summer, and was not expected to return until later in September."He's in really good condition at the moment,” Arteta said of Timber. “He's been on the pitch for a few weeks and he’s been training with us now, so he's in a good place."Big boost: Jurrien TimberGettyTimber, ultimately was left out of the Arsenal matchday squad for the win over Chelsea, but it would appear a return to action is not too far away.Potential return date: September 9 vs Napoli (a)Cristhian MosqueraMosquera was forced off in the second-half of Arsenal’s victory at Villa Park last Monday, though Mikel Arteta indicated at the time that was precautionary.Speaking after the win over Chelsea, the Gunners manager said he is hopeful the muscle injury is not too serious.Read More"He had a muscular issue,” Arteta said.Doubtful: Cristhian MosqueraGetty“We think it is not too much but we need to wait and see in the next few days how it evolves."Early suggestions are that Mosquera is a doubt for the trip to Naples, meaning Konsa may keep his place alongside Gabriel at the heart of the Arsenal defence.Potential return date: September 9 vs Napoli (a)Bruno GuimaraesIt has been a stop-start beginning for Bruno Guimaraes at Arsenal following his £75m summer switch from Newcastle.He played a half against Manchester City as the Gunners ran out 3-0 winners in the Community Shield but was spotted in the second half sitting on the bench with ice on his right thigh.Ultimately, that caused the 28-year-old to sit out the Coventry win.Bruno GuimaraesGettyThe Brazilian then picked up a knock after coming off the bench against Aston Villa last Monday and was a doubt for the Chelsea game. The fact he was fit enough for the bench on Sunday suggests he should be in contention to start in the Champions LeaguePotential return date: September 9 vs Napoli (a)William SalibaThe good news is the defender doesn't need surgery, but it will be a while before he is back in action.William Saliba is a long-term absenteeAFP/GettyA statement released in July read: “Specialist reviews on William’s return to London this week have confirmed that he has suffered a back injury which will require a period of rehabilitation.“Extensive assessments have concluded that surgery is not recommended, but William should now commence a managed recovery programme.“William’s rehabilitation will commence immediately, with continual management of his injury, and he is expected to be out of action for an extended period.”Potential return date: Winter 2026