The Gunners chose Unai Emery to succeed Wenger ahead of their former captain.
“I think he has the qualities to become a great coach," said Wenger. “But a great coach means a man in great suffering as well. People from outside only see the glamorous side, the trophies.
“But the trophies, it's only a day in the year, five minutes, and until the end you are shaking. Everything else, the everyday, is the fight with yourself, with others, to convince. We must always question ourselves.
"It's a priesthood, a sacrifice of a life."