Clichy left the Gunners for City in the summer of 2011 and won the Premier League last season.
"He doesn't need to prove anything to anyone," the 27-year-old told The Guardian. "He brought so many new things to England and made certain players – like [Thierry] Henry, who was the best in this country for years.
"People started saying things about Wenger leaving because Arsenal were not winning. This is also a club that is always competing in the Champions League with young players – and they reach many quarter-finals.
"People don't realise this achievement because they want trophies but he has done so much. I really don't see English football being where it is without Arsene Wenger."
Clichy joined Arsenal from French club Cannes in 2003.