I follow track and don't pay much attention to road racing. From what I gather from Desisa's bio he has run almost exclusively on roads. He has a very impressive PR in the half at about 59:30. He is still young at about 21 years old (allegedly). Is he a serious threat for gold? And if so, what is his winning formula? Does he have serious closing speed or would he try running everyone into the ground over the last 5000M?
If nothing else he is running the Olympic 10000M for Ethiopia. That tells me he is a big factor in that race and merits discussion leading up to the Olympics.