Giroud was asked about the signing of the RB Leipzig striker after scoring in victory at Aston Villa yesterday.
He told Canal+: "Afraid of Werner coming? No, I'm not used to being afraid.
"But in any case it is a very good signature for the club. It is an additional motivation as I said before, for all attackers because the competition brings a motivation to excel and not to stay in your comfort zone.
"It is positive for the club, for the attackers and I hope he will flourish with us."