Leicester City boss Claude Puel feels Arsenal will struggle next season without Arsene Wenger.
Puel played under Wenger for seven years at Monaco in their French homeland, before following him into management.
The old friends will be in opposing dug-outs on Wednesday as the King Power Stadium stages Wenger’s penultimate game in charge.
Puel reckons leading bosses may not even fancy succeeding him.
“He is a great loss for Arsenal,” said Puel. “After a few years they can come back at a good level. But it is difficult when a club have had success like this and must replace the manager and sometimes replace valuable or great players.
“It will be difficult for the new manager. Perhaps the new manager or great managers will like different options or possibilities.
“I hope the fans and club do not regret their choice, because he has had a massive impact as manager of Arsenal for 22 years.
“How can you replace him? It is always tough — like after Sir Alex Ferguson at Manchester United [whose second place this season is their best since Fergie retired five years ago].”