Don't see it myself. Kimi is done. Great guy, was a great driver, occasionally still shows he is capable, but I don't see him as highly desirable for any team bosses at the moment. He knows his place at Ferrari, and does not challenge the status quo. Neither does Bottas, but he is probably cheaper, got the potential to improve and be around for longer. He can act as a base-line for comparison when Hamilton leaves at the end of 2020, not to mention aid car development consistency when Hamilton leaves.