Desailly insists Giroud is the better choice for France coach Didier Deschamps.
Speaking about Giroud, he told Goal: "He is indispensable for the national team.
"Giroud is the perfect team-mate and player for the France national team. He is the first choice in the national team. [Anthony] Martial doesn't combine as well in the national team as Giroud.
"[Kylian] Mbappe can play down the middle but he is the world champion from being out wide. You have to pick Giroud, who is the second top scorer in France's history, even if at club level he is on and off."