Kimi Raikkonen 's deal with Ferrari expires at the end of the season . The team has been struggling to find a replacement for its four-time world champion and is now looking into other options such as Toro Rosso's Carlos Sainz Jr. or Red Bull's Daniel Ricciardo. Maranello driver has struggled to replicate team-mate Sebastian Vettel .
Kimi Raikkonen 's deal with Ferrari expires at the end of the season . Team principal Maurizio Arrivabene wants Finn to improve performances . Maranello driver has struggled to replicate team-mate Sebastian Vettel .