Dein was close to Wenger until he left the club in 2007.
Dein, who brought Wenger to England in 1996, told 5Live Breakfast: “It’s a long, hard season and I am a great supporter of Arsene.
“He has done a phenomenal job and continues to do so year-on-year.
“He has the fire in his belly. I don’t see any reason why he shouldn’t be there.”