Hello,
I was living overseas when I sponsored my wife and I received an Option C, mailed to me in my country of residence.
You have to contact the CRA and ask for one, first of all.
It is much easier to get a hold of someone by phone at CRA than CIC so just go ahead and call and whoever you speak to just ask that persona about receiving an Option C, they are all nice people.
If your husband has any outstanding tax returns he needs to complete, then he must do so before receiving the Option C.
Whether he is able to immediately receive the Option C or not largely depends on whether he's receiving income in Canada and whether his status is 'out of country'.
I forget the requirements for this, but, basically it means not earning income in Canada and not having any real income-based ties, maybe someone else can confirm.
Investments and investment income are handled separately as are foreign investments.
But if for some reason he's receiving some kind of income then T4's have been issued and that means taxes must be filed for the year of issue of those T4's. (I think they are T4's, sorry not 100% sure but whatever the form is that says you're receiving normal income in Canada, sep. from investments)
Provided all tax returns are completed (their computer will show what is needed, whether T4's were issued for such and such year or not, etc) then they will be able to mail you an Option C to your country of residence.
If he must file any tax returns he will have to go online, print off the forms and do all that, both federal and provincial returns.
Your tax case worker (someone at the CRA) will instruct you on all that and you can email them.
He needs his SIN, the SIN is basically your 'client number' at the CRA.
However when you email them they cannot email back, they must call you and speak with you always, they never mail back.
This is how it worked with me, I was last in Canada in 2007 and returned in 2014. Because I was officially 'out of country' from 2008 to 2013 I did not have to file, but I had to go back and file 2007 because I had not filed that year, because I left Canada before it was tax time.
Then after I completed my T1 for 2007 I received my Option C and finally made my wife's application in summer 2014.
Hope that helps good luck