There's a flicker of something at the reminder, but Callaghan only listens. He's not - quite - disappointed at the lack of further stressing on just how out of his league Krei is, be it in magic or anything else...but it soon enough comes around to such, and then he steps in;

"He's come only with foreign currency, and isn't much suited for the kind of work I've been helping with. There's not much he can do, but if necessary, I could..."

There's not any smugness or malice in it. There is, however, a casualness that borders on insult; the smooth assumption that Krei has nothing to offer, and therefore needs assistance in taking care of that payment, and therefore it is up to Callaghan to provide it.

It's a challenge. Prove him wrong, Krei, or find yourself further indebted.