User blog comment:Xilinoc/Ch. 557 - He Already Set His Life Aside/I Already Threw Away My Life/@comment-1351982-20131113152627/@comment-11051098-20131113155049

"Look!" *BANG* "An undead monkey! Top that!" (found a suitable Jack Sparrow quote)

If logic didn't say that Ichigo will be the one to kill Yhwach, I would say Sajin has a good chance to attempt to do that, to fully repay his dept to Yamamoto by killing the one who killed him.

If the fight ends with Sajin killing Bambietta, which I see as likely given the fact that he's immortal right now, I would say that killing 1 Sternritter and contributing to the defeat of the Wandenreich should set his dept paid.