Owner Roman Abramovich has made no secret of his desire for Europe’s top club honor since taking over the club in 2003.
Kalou’s late goal against Benfica on Tuesday moved them a step closer to the prize, and the Ivory Coast international believes the club can go all the way this year.
“I believe there is no reason why we could not win the Champions League,” Kalou told reporters. "Anything is possible. We have the team for it, we have the players for it."
Kalou did not enjoy his happiest period at the club under the management of Andre Villas-Boas, making just 14 appearances in all competitions.
However, since interim manager Robert Di Matteo took charge, the 26-year-old has been brought back into the fold, and he says he is delighted to be back helping the team.
"It means a lot to me to score. I am happy to be in the team, playing games and to score," Kalou stated.
"I still think I can improve and if I can help teams to win games, I'd be delighted to do that.