The Real Madrid forward was clocked driving at 216kph on the outskirts of the Spanish capital in the early hours of Feb. 3, more than twice the speed limit of 100kph.
The 25-year-old faces losing his licence as well as a possible fine, a period of community service or even a short prison sentence, according to Spanish law.
Of greater concern to France is that the Madrid authorities want him in court on the day of the key match.
"Only that day was available?" Deschamps asked in an interview with Spanish television on the sidelines of Saturday's La Liga clash between Real and Barcelona at the Bernabeu.
"I hope we can find a solution because he is a very important player for us," he added as Real won 2-1.
Spain and France are level on seven points at the top of Group I ahead of the game at the Stade de France in Paris.
Spanish courts typically allow appearances to be rearranged if defendants can provide a valid personal or professional reason.
- Sports & Recreation