You realise Donaire is on the highest amount of testing of any fighter right, 24hrs/365 days of the year voluntary random blood and urine testing. Doesnt mean he is clean i acknowledge that, but ill believe hes clean easier than everyone else in the sport for the time being.
For me, since the Lance Armstrong case, i am highly suspicious of any athlete. For me also it doesnt matter if you are with Conte, Heredia, Ariza or some unknown all these strength and conditioning coaches know about PEDs, how to administer them and how to use masking agents. Its just down to whether they are willing to accept the risks involved, and for me Conte is someone who cant afford to take the risk.
This could be an interesting case study actually, we all know Khan has no chin and doesnt have KO power, if he comes out suddenly taking and delivering bombs then ill accept it looks fishy.