How to or how not to work with a Realtor in wholesaling

Hello, I was wondering what the realities are if you find a property that an agent is working on and you think you can get a good deal on it by wholesaling. Does this bother most agents that you would try to wholesale the property, or are they generally okay with it as long as they still receive their commission? I am a newbie at wholesaling and birddogging so any advice on this would be very helpful,

Thanks,