Fòram na Gàidhlig

Using the aig prep pronoun to indicate possession I could of course say something like:

Bidh cù eile againn a-màireach - We will have another dog tomorrow.

However, you can also say something like:

Bidh iad againn air a' mhionaid

Do you look at this second example as saying:

They will be at us (here) in a minute OR
We will have them in a minute

i.e. my question really is whether the second example is also treated as an instance of possession, or is it looked at differently?

What's your context for the second one?

On reflection I can maybe offer an answer to my own question. Looking at these two sentences:

Bidh cù againn a-màireach
Bidh iad againn a-màireach

Structurally both are the same thing i.e. Something/someone will be at us tomorrow. Maybe the answer to my question is an old favourite, context.

Bidh cù againn a-màireach - A dog will be at us tomorrow - spoken in English: We will have a dog tomorrow
Bidh iad againn a-màireach - They will be at us tomorrow - spoken in English: They will be here tomorrow

Therefore the context defines how you actually tr*nsl*t* into English i.e. sometimes it will become possession (have), other times it won't.

Sounds right. In a way, the dog will also have arrived when you take posession of it.