Inoue cannot get anything with Casimero right now and its like high risk low reward if he push to fight with him that's why I think this fight between them will never happen, Casimero lost his WBO which is the only ticket to have match with Inoue. The hot target with Inoue right now is Paul butler and if he win he became the undisputed champion. But let see what will happen next if Inoue would fight Butler or he will climb higher.
I don't see the fight between Inoue and Casimero happening unless the camp of Inoue agreed to it, Inoue is the champion right now so he can choose who he wants to fight, all Casimero can do now is to annoy Inoue and dare him to fight him, he could have a good chance to fight Inoue if he only did not lose his chance to fight Butler and beat him, Donaire can only hope that Inoe will give him a chance to fight him.
Inoue will not waste his time fighting Casimero, there's a champion that he can fight and that is Butler, and if he beats Butler, he can be the undisputed champion and maybe he will go up in weight after that, and he will challenge the championsi in the heavier division.
I agree with that, if Inoue did not accept the challenge when Casimero was still a champ, how much more than Casimero now does not have the belt anymore. Casimero has to start earning a reputation in boxing, and that is by challenging a champion, probably not in the bantan weight anymore as he already struggle toreach the required weight.
If all goes well it is possible that he can fight Buttler, but with Inoue he is likely to knock him out.