Pierre-Emerick Aubameyang is in line to start for Arsenal against Napoli in their Europa League quarter-final first leg on Thursday.
Illness had restricted the forward to substitute appearances in Arsenal’s past two Premier League matches.
Aubameyang, 29, is Arsenal’s leading scorer with 22 goals in all competitions this season.
“He’s getting better and can start,” said Arsenal manager Unai Emery.
“He had a small problem and he has taken antibiotics for his illness,” added Emery. “That’s the main reason he didn’t start those two matches.”