When/if the dust settles, Nobunaga will ask Chrollo to let Hinrigh duel Bonolenov for a chance to join the troupe.

As someone who really like the interaction between Nobunaga and Hinrigh, I thought of this scenario as a way for both of them to remain bros.

For Nobunaga, imo, he seems to be trying to fill the void that Uvo's has left. And their vibe so far have gone much much better with his previous attempt with Gon.

Hinrigh only vowed to kill whoever killed Lynch, not whatever group is behind it. Given how each troupe member kinda acts on their own accord, I think Hinrigh would be satisfied with just Bonolenov's death. When he manages to narrow down the suspect to troupe member then he would probably confront Nobunaga about this. Because they're bros, Hinrigh will trust Nobunaga's word that the suspect is likely other troupe member acting separately.

This is where I think Nobunaga will make a proposal to Hinrigh to invoke the deathmatch membership rule against Bonolenov. If Hinrigh wins, he will both avenge Lynch's death and get to join his idol. The fight should be after the whole thing with Hisoka is finally dealt with.

Hinrigh will realize that, with all the chaos going on, assassinating a troupe member and therefore become hostile to the whole group will be very difficult to achieve and even problematic even when succeeded. So he will accept the proposal to keep his personal vendetta from jeopardize everything, while still having a chance to fulfill it. Nobunaga will then find a time to arrange this with Chrollo and Bonolenov.

Now, to be honest, Hinrigh has little chance of defeating Bonolenov in a fair match, but I think the chance of him succeeding is still higher than any other alternatives. Even if he fails, it's still a much better death than most character in this series.

But it's more likely they'll never get to the duel because Hisoka has to be dealt with first and there's no predicting that. But at least this will keep Hinrigh satisfied for now and not interfering further, or maybe actually supporting the troupe for real this time.