Les Bleus trail Ukraine 2-0 from Friday's first leg and face an uphill task in Paris to reach Rio 2014.
However the Arsenal boss remains positive, telling The Sun: "The team must unite around strong themes like solidarity.
"They shouldn't rush.
"They'll need to be consistent in their efforts but also patient and intelligent.
"The magic of team sport is in three or four days a position of strength can be reversed."
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