I’m framing a home for an owner builder. Him and I have a contract. I’m not a contractor myself, I had a guy help me (he’s not a contractor either) and I paid him for the first half of construction, he never came back for the second half and is now Threatening the threaten owner saying he’s going to put a lien on his property for non payment. This is in Arizona, is this valid? If the guy didn’t do the work there is nothing anyone owes him.