Arsenal captain Pierre-Emerick Aubameyang is expected to start the second leg having fully recovered from malaria. The 31-year-old contracted the virus while on international duty in March and missed four games, only coming off the bench as a late substitute in the defeat to Villarreal at El Madrigal. The Gunners will hope Aubameyang can carry on where he left off, having scored on his return to the starting line-up in Sunday’s win at Newcastle – as he aims to replicate the hat-trick he scored in the second leg of the semi-final victory over Valencia two years ago. Behind Emery lines