Of course, Casimero would go after a fighter that holds the belt, and if he wins the fight, he could be the undisputed champion, and then he can move in weight leaving Inoue beltless.
Actually, this is easier said than done because we all know how good Inoue is, he was even described as the next Manny Pacquioa.
With the order of the WBO, he needed to match with Butler first and that has delayed their face up but that's totally fine. We will see if that tag line really suits him.
Up until now, we are waiting for the next fight of Casimero and the results.
So til then, we don't know what will be his next plans.
For now, we are sure that Inoue vs Donaire re-match will happen, and let us see how will this pan out.
I don't think Inoue will not give a good fight on this upcoming one because that will tell him what's next for him.