Jackdaws and bird boxes

Jackdaws - I have a family of jackdaws who’ve been coming back to my eaves for the last 4 years. We’re getting the roof done now (they did some damage) but I don’t want them disappearing as I’ve grown fond of them - despite them being noisy scamps.

I’ve bought tawny owl boxes as they look similar to my eaves and thought it’d be a suitable replacement.

They won’t fit directly under the eaves due to a downpipe so I’m wondering if i can place it on a different wall

So my question is, which wall should I place it on? Eg North facing?

Picture: pink shows where they were and direction of the nest. 
yellow is where I’m thinking of putting the boxes  - so on the side wall