The Ivorian was brought to Stamford Bridge by Jose Mourinho in 2006 in a £9 million deal from Dutch club Feyenoord.
And the 26-year-old, who has made 260 appearances for the Blues - scoring 60 goals - insists he is not currently thinking about his future.
"I know my contract ends at the end of the season," said Kalou.
"For me the most important thing is not to fight for a new deal, it is just to enjoy myself with the team and play the best I can and help the team win the games we have left to play.
"As long as I do that, I am fine and I am happy with myself."
Kalou found himself on the fringe of the Chelsea squad during Andre Villas-Boas’ time in charge, making just 15 appearances in all competitions this season.
However, the forward has been brought back into the fold since interim manager Robert Di Matteo's appointment, and he has praised the ethics of the former West Brom boss.
"I think the idea is to give an opportunity for everyone to show that they want to play for the club and give 100%," he added.
"That is how you get everybody behind you and that is how you get the team to work together."