Kalou was proud to net Tuesday night's all-important goal and believes anything is possible in this season's competition.
"It means a lot to me to score," he said. "I am happy to be in the team, playing games and to score.
"I still think I can improve and if I can help teams to win games, I'd be delighted to do that.
"Anything is possible. We have the team for it, we have the players for it.
"I believe there is no reason why we could not win the Champions League."