I stumbled upon an agent who seems ideal for me. First, he's new, which should help because I'm a new writer. Second, he's particularly motivated in books to promote reading in boys and teenage guys. I want to write books which promote reading in boys and teenage guys. He's interested in my genre. He requests that authors' queries be composed of a query letter and the first 3000 words of the novel WIP. There's nothing in his listing which states that the novel WIP must be completed before querying him. Is completion of the manuscript an unspoken rule in the industry?