Dupont underwent surgery two weeks ago, and surgeon Frederic Lauwers is expected to decide on Monday whether the team captain is ready to return to competition.
Les Bleus qualified for the last eight when they crushed Italy 60-7 on Friday.
Dupont was not on the match sheet but he has resumed training alone and the Frenchman appears to be fit - cheekbone injury aside.
"His physical qualities are impressive. He's worked hard, doing a lot of running and speed, which are his strong points. Physically, Antoine hasn't lost much despite his two weeks off," Ghezal told reporters on Saturday.
"He's in great shape, as the Performance Unit has told us. All that's missing is his appointment on Monday with the surgeon who operated on him.
"He'll be the one to decide whether or not he can return to the pitch."
