Hailemariyam Amare who was third at Ethiopian trials was replaced by Lamecha Girma. As far as I understand the decision was made by Ethiopian Olympic Committee contrary to the position of Ethiopian Athletics Federation. Amare was going to fly in Tokyo but was returned by EOC at the airport:
https://www.facebook.com/EthioRunner/posts/2944701312437118
https://www.facebook.com/AfricanAthletics/posts/10158494086396452
P. S. I used machine translation from Ethiopian. Could anyone translate this on their own?