the magical equivalent to the number zero
That's a fair point. But obviously he knows that the Imp and Owl is a Boromar tavern, so perhaps he has been trying to get information from Mal before?Sure...but why would he? Ozzar is an honest copper - a bit disillusioned, but still generally honest. How would you bring him into the fold?
On the other hand, it is hard to see how he would fit in this scenario, so maybe it would be better if I added part about him thinking of going away...
Or the other way around. Maladiel could've tried to get something from Ozzar, perhaps some dirt on someone, and got rebuked, and now they have a sort of understanding, both hoping to gain leverage on the other in the future?