Wenger's future with the Gunners is in doubt following his side's 5-1 defeat to Bayern Munich on Wednesday.
Gary Neville has defended Arsenal boss Arsene Wenger
His performance levels consistently for 20 years have been unbelievable
Manchester United legend Gary Neville
But Manchester United legend Neville has backed Wenger, insisting he deserves more respect for his achievements at Arsenal.
"Does Arsene Wenger's 20 years of service at the club deserve a little bit more respect than certain types of things that have happened? Some would say yes, some no, he deserves everything he gets," Neville told Arsenal FanTV.
"Some people, including myself, would say hang on a minute. If it was Dimitri Payet, who just handed in a transfer request at West Ham and has left the club now, you can understand why fans would go full on.
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"If it was John Terry, who has given Chelsea 20 years and might not be in the team anymore, might not be playing as well. Does he deserve banners and abuse? No.
"It's a unique one with Arsene Wenger, what he has achieved at the club, the greatest ever manager for Arsenal.
"His performance levels consistently for 20 years have been unbelievable. And you'd have to say, I do go along the line of, 'be careful what you wish for'.
Arsenal boss Arsene Wenger is out of contract at the end of the season
"Not in the sense that change isn't good, because it can be, but Arsenal's spending has been less than all the other clubs. Tottenham, Liverpool, Manchester City, Manchester United, Chelsea.
"If you spend less, you're more than likely – and I know Leicester are the exception – to finish below those other clubs.
"To continue to finish second, third, fourth over that period while still spending that much is an unbelievable achievement."