The thing with Donaire is that he is not a fighter that rely on his physical advantage like his speed. That's why even at age 39, he can still fight because of his mentality and hard work. Unlike other specimen who's career goes down after reaching a certain age because of their speed, Donaire more of his timing, and that is one of his advantage.
No fighter can get away from Donaire's left hook though, because as I have said, it is more on timing. So maybe Inoue may be very reluctant to engage but sooner or later I'm seeing Donaire touching him with that left hook and see how it goes.
Donaire really wants this fight to happen because he knows exactly what to do next and as a smart boxer like him, he knows which skills to improve and we already know the outcome of their first fight, where Inoue has the hardest battle to survive against Donaire, this time it would a different fight where one of them will gonna dominate the fight to prevent another loss. If somehow Donaire wins this fight, maybe we will see another trilogy but if not, then this will conclude their rivals in this weight division.