Benitez has been the target of an online petition calling for him not to be considered for the job full-time.
The former Liverpool manager refused to be drawn on the petition, and claims he is only concerned on how the Blues players react.
"If I can see my players in training without conviction, I will be worried," Benitez said.
"Today, I was talking with one or two senior players, explaining and agreeing the way we are doing things is right or if we have to change this or that.
"We are working with the players every day, and they're happy.
"We cannot control the perception from outside, but I can influence the players, explain things and analyse things."