['For what happened to Royce,' is how that sentence should finish off. John has no delusions about Alfie promising to give him free license to avoid threats or injury for other things in the future.]

Yeah. All right.

[And much as it pains him to say this...]

And I'll... try to stay out of your business, whatever it is. For her sake. Won't make promises, but I'll try.

[Mainly because he wants to give himself some room in case Alfie does anything truly egregious.]