Manchester United manager Louis van Gaal believes Arsenal counterpart Arsene Wenger is doing a great job at the Gunners, despite increasingly vocal criticism of the Frenchman.
Wenger celebrated his 19th year in charge of the north-London outfit earlier this week and has led his club to consecutive FA Cup titles in recent seasons, but their disastrous start to this term's Champions League campaign has brought his doubters to the fore once again.
Specifically, his decision to rest Petr Cech in the Gunners 3-2 loss at home to Olympiakos in midweek left many scratching their heads in wonder.
However, Van Gaal is not one of them and he believes Arsenal should consider themselves extremely lucky to have a manager of Wenger's quality leading their team.
"I think he is doing great work. When you can, like Sir Alex Ferguson, stay at a club for such a long time, you have to be very good otherwise you shall not succeed," he said in the lead up to the team's Premiership clash at the Emirates Stadium on Sunday.
"So I think Arsene Wenger is one of the best coaches of this world. In the same way, I think Sir Alex Ferguson is the best because he won the most titles.
"It is easy to say that, but with Arsene Wenger, when you are such a long time with one club and everybody is satisfied – the fans, the board, the players – then you are very good, believe me."