Paris Saint-Germain's players will wear black armbands in Wednesday's Champions League game at Chelsea as a tribute to the victims of the helicopter crash which killed three French athletes.
Olympic gold medalist swimmer Camille Muffat, boxer Alexis Vastine and sailor Florence Arthaud were among 10 people who died after two helicopters filming a reality show crashed in a remote part of Argentina on Monday.
At a news conference in London on Tuesday, PSG coach Laurent Blanc said he knew some of the victims.
Blanc says "the whole of French sport is in mourning."