Seller's Agent at my Open house... Problem?

[Clarissa Nesbitt]

I am wholesaling a house and the seller' s agent has to be at the open house. The house is listed as off the market because the listing expired but the seller still wants everything to go through the agent. I originally planned to buy this house as a rehab but couldn't get the funds so I decided to wholesale it. I'm not sure how the agent will take this if he finds out. But I also feel that it's better to tell him so there are no problems at closing. Can he have my seller back out of the deal even though I have it under contract? Can he try to to sell to my Cash Buyers while we are still under contract? This is my first deal and I have put a good bit of money invested I need everything to go well. Any advice would be appreciated!