The north London club have been on a miserable run of recently, picking up just five points from the last 27 available as they have fallen down the Premier League table, now closer to the relegation zone than the Champions League places.
They somewhat arrested their slump last time out against Southampton, mustering a 1-1 draw, and Aubameyang finally ended his long wait for a goal from open play.
However, just a few days after ending his barren run, Aubameyang has now been forced to miss Saturday’s away trip to Everton with the club confirming he is suffering from a ‘tight calf’.
Speaking to Sky Sports, Mikel Arteta explained: ‘He’s got a small muscular injury, so he will be out for a few days I think.’
Asked if Aubameyang will be back for Tuesday’s Carabao Cup clash with Manchester City, he added: ‘I don’t know, we’ll have to assess him again, see how it evolves, but he could not be fit for today.’
In the absence of the Gabon international, Eddie Nketiah leads the line with support from Willian and Nicolas Pepe.
The armband, meanwhile, has been handed to centre-back Rob Holding despite David Luiz’s return to the starting XI.
In some much brighter news for the Gunners, Brazilian winger Martinelli is named on the bench for the first time since March after a serious knee injury, with Arteta delighted to have him back.
Speaking on Friday he said: ‘Gabriel Martinelli is very close to being available and fit to be part of us as well, which is great news.
‘Gabi is pure enthusiasm, energy, belief, charisma and goals. And this is him.
‘He’s around the training ground and he’s around our training sessions and the energy is different because he goes 100 miles per hour.
‘He’s got this passion in his way of playing and he is a threat. He’s a player that we’ve been missing because he brings something special to the team.
‘He’s contagious with his attitude and I think it’s going to be a big boost when we have him.’