From reading the article, it sounds like Kemboi is there to help promote the race through his reputation and charisma. It does not sound like he or anyone else expects him to run a fast, competitive time. I am thinking that he will run something like 2:17-2:20 based on his half marathon PR of 64:xx. He doesn’t much incentive to run himself into the ground trying to break 2:15. I do think he will finish.
It is refreshing to see the organizers rolling out the red carpet for an East African superstar like this after the IAAF’s horrible decisions this past week. Hopefully the runners and fans are entertained!