Wenger has come under renewed criticism after his side slumped to a 3-1 defeat to Chelsea over the weekend.
The result all but ended Arsenal's hopes of a first Premier League title since 2004.
Fans reflect on Arsenal's woeful defeat to Chelsea
Sat, February 4, 2017
Express Sport brings you the best tweets as Arsenal fans reflect in their woeful defeat to Chelsea on Saturday
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Arsenal fans reflect in their woeful defeat to Chelsea on Saturday
And Campbell, who was part of that title winning squad, feels Wenger has drifted away from the factors which made him a success in the past.
He told Sky Sports: "He's almost gone away from what made him great.
Arsenal boss Arsene Wenger
"He used to have a fantastic balance between really good English players and an influx of foreign player.
"A lot of teams copied that, used it and moved on and sort of said lets go with it.
"He kind of went a little bit away from there and I think he has suffered."