look at the betting odds, it's still up though the fight may not happen.
https://sportsbet.io/sports/event/boxing/international/international-matchups/casimero-johnriel-vs-butler-paul-61a7d6173719bbfa0169f6c2
Let's wait for the odds of Butler vs Casimero's replacement.
It's disappointing indeed but we can't do anything about that, Casimero should not fight as he has a problem, maybe next year he will recover again and take that belt which I'm sure he can as he did not lose that belt inside the ring. When the time comes that Casimero will fight as a challenger, I'm sure he will still be the favorites, nothing would change for sure.
He will eagerly find the way to recover that belt for sure. Knowing the attitude of this man, he will chase whoever holds the belt and challenge to prove that he deserves to hold it. It's a good chance and more exposure again for him if he beat the new champ, then challenge Inoue again and bring more trash talks.
![Grin](https://bitcointalk.org/Smileys/default/grin.gif)
![Tongue](https://bitcointalk.org/Smileys/default/tongue.gif)
Sad to hear, though, that he needs to remove his belt because of that health concern. I expect that after his doctors approved of his condition, he will be back in action and train harder.