Pierre-Emerick Aubameyang has missed Arsenal's midweek trip to face Wolves due to a sinus problem.
The Gabon striker leading scorer in the Premier League for Arsenal with 19 goals in 33 games.
Arsenal confirmed he had a procedure to sort a sinus issue and he will be assessed ahead of Sunday's tie against Leicester City.
In Aubameyang's absence, manager Unai Emery opted to put Frenchman Alexandre Lacazette through the middle with Alex Iwobi and Henrikh Mkhitaryan providing support in wide areas.
The procedure was successful and Arsenal are hopeful they can bring Aubvameyang back into the matchday squad for the weekend match against Leicester.
After a win for rivals Tottenham on Tuesday night, Arsenal needed a big result in Aubameyang's absence to bolster their bid for a top four finish but they made the worst possible start when they fell behind to a Ruben Neves free-kick.