The former Gunners executive has spoken out in defense of the man he recruited to the London side in September 1996 and believes success is a matter of squad building.
Dein believes that the famed Gunners manager, who he originally recruited during his time with the London outfit, still possesses the drive necessary to bring the side success.
"I think he has the fire in his belly," he told BBC Radio 5 Live. "I don't see any reason why he shouldn't be there. He is one of the best managers in the world. He has been coaching for thirty years."
Dein went on to say that future prosperity for Wenger at Arsenal will be a matter of building the proper squad, an observation fueled by the club's inability to keep pace at the top of the table in the 2012-13 Premier League season.
"He knows what he is doing. He knows what he wants and I think it's just a question of identifying the right talent," he continued. "Clearly they have fallen 20 odd points behind Manchester United which is not good enough and it speaks for itself that he has to strengthen the team and I know he will do that."