Courtois had little to do last night as Chelsea breezed past Qarabag in the Champions League.
"It is good to face Arsenal now," Courtois said.
"Everybody is healthy and things are going well. We won at Leicester, won comfortably (on Tuesday night) and will go into the Arsenal game with a good feeling.
"We are doing well. After the bad first half against Burnley, I think all our performances have been good. We have shown good spirit, good football and good wins most importantly of all."