Why you have to buy it? There are thousands of properties in Ottawa.
If you know the rental price, you can ask the seller to get the tenant out before closing date (in your offer). Then you start to find a new tenant you like (check criminal, cedit ...). You have to spend a bit of your own time and money.
Thank you. I have not given any offer till now. If the new agents are good, why do I bother find new ones.