Wenger left the club after 22 years in the summer of 2018, with many supporters happy to see the back of him after a number of unsuccessful years.
And the Frenchman has lamented how the club's expansion into the modern era took away the 'human' touch of club management.
Wenger, who won three Premier League titles with the Gunners, told So Foot: "These days, the size of the clubs sometimes stops them from keeping the culture of performance.
"When I arrived at Arsenal, we were 80 people. When I left, there were 750, and when there's 750 people in one organisation, each one thinks about saving themselves rather than improving.
"I think there's a degree of reflection for me: how do you keep that desire to perform? Up to about 150 people, I think you can stay human. You know the name of the wife, of the kid of such and such.
"My regret at Arsenal is to have gone from human size to inhuman, with a larger administrative weight. Everything accelerated. Ten years ago, you'd see a guy who was good, you'd get him in, give him a tracksuit and he'd be a part of the team.
"That's long gone. Now, if you want a new physio, you go through 300 applications. That's how, at Arsenal, bit by bit, I felt the club slip away from me."