Sagna was part of the Arsenal side that got humiliated 6-0 at Stamford Bridge last month, and has warned his French compatriots there will be no let up from the crowd.
He told Le Parisien: "Stamford Bridge is intimidating. The pitch is small and the spectators are very close.
"There is a lot of intimidation and agitation. You really hear the chants and whistles. There are not many, but they noise is like they were twice as many."