However, this may not be the case for Arsenal defender Nacho Monreal, who rather bizarrely left the field of play during their second leg at Napoli.
Monreal left holding his stomach around the hour mark but was back on the pitch a few minutes later to complete the rest of the game.
His absence didn’t affect the Gunners’ form as they secured a place in the last four with a 1-0 triumph at the Stadio San Paolo, going through 3-0 on aggregate.