The Ivory Coast international left Stamford Bridge in the summer of 2012 when his contract expired after six years with the club and he went on to join Lille.
Kalou is enjoying his time in France, but amid reports linking him with Chelsea's London rivals, Arsenal, he has opened the door to a move back to England.
He is quoted as saying in The Sun: "I'd love to go back to England. I spent six seasons there and I am crazy about the Premier League.
"Players' careers change so quickly. You never know what will happen tomorrow."