There's no need to worry because Butler isn't Rigo and he's a former champion too so we will really see an entertaining fight and see some good action. Butler indeed doesn't have much of a choice but to fight good, sadly his days are already numbered and his people will see him getting embarrassed inside the ring with the chance of getting knockout and being bagged by Casimero.
I'm just watching some highlights of Casimero's fight and I forget the name but he also demolished one British fighter in the own home court. So this could be another of those fights that the fans will see their local boys being maltreated by John Riel. Casimero is already hitting his peak at this point so it's going to be very difficult to stop him. Not only with his punching power, but he has a good chin as well.
That would be Charlie Edwards, a British professional boxer. Casimero fought him 6 years ago and finished the job on the 10th round via TKO. As you saw Casimero's record, most of it was TKO and KO so my best guess is that we will see another victorious KO two weeks from now.
Paul Butler will surely struggle in the ring fighting Casimero specially now that he's healthy and in good condition. This better be a good fight!