This stray cat WONT LEAVE OUR YARD?! What do I do?

I’ve been seeing it in our back yard for days. We’ll I saw it a couple days ago but it went away. Then yesterday the same cat came back. Then today I saw it again! I told the cat to come home but it won’t move. Poor kitty but we can’t just bring it in. I have it water yesterday and today. I asked the neighbors but none of them own cats. One does but it isn’t hers. I show them a picture. How can I get that damn cat to go away?!