It is clear the term non-negotiable is foreign to you, so I shall explain it one more time.

You will carry the marker I give to you, or I will do nothing for your brother. I am not Sandaime, nor am I the Toad Sage, and if you expect me to make the same choices they made, then you will be sadly mistaken.

[A pause]

If you can accept that term, I will accept your word, Uchiha Itachi-san.