"It's clear Kimi likes racing for us and would like to continue, which is a testament to all the hard work put in by everyone," BBC Sport quotes Boullier as saying.
"From our perspective, we can see what a complete driver he is and how much he brings to the team in many different areas. Kimi wants to be assured we have everything in place to tackle the significant changes we will see in the sport next year.
"We're working hard to assure him Lotus is where he should be, and piece by piece we are getting all our ducks in a row."
Raikkonen joined Lotus in 2012 on a two-year contract.