Kimi Raikkonen negotiated his new Ferrari contract without the assistance of his long-time manager.
"The agreement was done completely in Kimi’s hands," the Finn’s manager Steve Robertson told the Finnish newspaper Turun Sanomate.
Although Ferrari reportedly looked at replacing the 36-year-old for 2017, Raikkonen has ultimately been re-signed as Sebastian Vettel’s teammate.
"Kimi called me on Thursday to say Ferrari wants to continue with him, asking for the lawyers to take care of the paperwork," Robertson revealed.
"It all happened in one day, with only a couple of key people involved in the negotiations," he added.
Robertson continued: "Kimi told me in the spring that he wants to continue. So it’s fantastic that his dream continues. I’m really happy for him."