For at least four weeks, Ile-de-France and eight agglomerations – including Grenoble, Lille, Lyon, Aix-Marseille, Saint Etienne and Toulouse will be subject to a curfew from 9 p.m. to 6 a.m.
The state of emergency will begin at midnight on Friday, with President Emmanuel Macron saying the restrictions should last for at least six weeks, pending parliamentary approval.
That leaves Celtic in limbo ahead of their draw with Lille on October 29, which will start at 7 p.m. local time.
While there is so far no indication that the game will not go ahead, the measures will raise questions about the safety of playing the game.
Speaking on French television, Macron said: “What I hope, and what I expect from each of us, is that, as we did at the time of the lockout, everyone world is aware of the risks and issues.
“The French were exemplary and we respected him much better than in other countries. ”
Neil Lennon’s side will face Milan in their first game on October 22, with both sides facing Covid cases.
The Italians saw coach Daniele Bonera test positive just days after Zlatan Ibrahimovic and Rafael Leao were allowed to return to training.
Celtic, meanwhile, are without Hatem Elhamed and Nir Bitton for Saturday’s Rangers game, with Ryan Christie self-isolating despite not testing positive.
Odsonne Edouard tested positive for the virus while on international duty with the French Under-21 team and will return to Glasgow on Friday after going into self-isolation.