Maybe you should e-mail him, letting him know how you feel. I wouldn't advise a paranoid message, rather send a straight & simple message.

Like: "Hi, I am feeling concerned that you plan on spending the night in my area on Tuesday night. Does that mean you are hoping to spend the night at my place? I feel very uncomfortable with that idea, and wanted you to know."

Hope that idea helps you feel better and in control of how things go. Best wishes!