At least five senior Arsenal players were absent from Tuesday’s training ahead of key fixtures this week.
Mikel Arteta’s men are preparing to face Sporting in the second leg of their Champions League quarter-final on Wednesday.
On Sunday, they travel to Manchester City for a Premier League title decider.
However, Arteta might be dealing with an injury crisis, as Riccardo Calafiori, Martin Odegaard, Declan Rice, Bukayo Saka and Jurrien Timber were all not present in training.
Rice was the only one of the quintet who played in the 2-1 home defeat to Bournemouth on Saturday.
Calafiori, Odegaard, Saka and Timber have all been missing in recent weeks – with Odegaard (starting) and Calafiori (as a substitute) playing in the 2-1 FA Cup quarter-final loss at Southampton on Easter Saturday.