How to exchange the Blog link

I am noticed that a guy left a comment on my blog. He asked to exchange the links with me to his blog, and gave me his site information.
I checked his blog. There is no link to me.
It looks so funny.
A person ask another one to swap links, but have not set the link in advance. How does he think?
Let me list the requirement of link exchange rule of my blog.

You want to exchange the link to me. So you should prepare your link to my Blog in your site before send your request. If I review your site and feel comfortable to link back to you, I will inform you. If I don’t, I will also let you know.


If you don’t want to link to me first, do not leave similar comment in my blog.
It is just waste your time.