The Gunners kicked off their Europa League campaign with a 3-1 victory against FC Zurich in Switzerland.
PSV Eindhoven were set to be Arsenal’s second fixture in the group stages, but due to the cancellation of the fixture following the death of Queen Elizabeth II it means the clash is now the fourth match in the group stage.
Arsenal then beat Bodo Glimt 1-0 away from home and then 3-0 last week in their home leg.
They now have Thursday’s clash with PSV and their away match with FC Zurich to contend with before securing their spot in the knockout rounds.
Arsenal are top of their group with nine points from three games, whilst third-place Bodo/Glimt are on four points, meaning a win against PSV would secure their spot in the knockout round and most likely top spot in Group A.
However, they look set to have to do so without Martinelli.
The Brazilian has been a key cog in Arsenal’s side this season and the Gunners will be hopeful he is back in time for the weekend when they take on Southampton.