According to Newsweek, Ko Un is in the running:

Ko Un—The South Korean poet has written short lyrics as well as lengthy epics, drawing his material from decades of experience in which he has seen South Korea’s struggles with Japanese occupation, the Korean war, and the transition to democracy. He’s also been a political activist most of his life, to the point of having been imprisoned multiple times for his activism.

And at least one site sets his odds as low as 20/1.