I have a friend that I brought on to a remodel project. She had no money to invest so instead she offered up her husband to do work in lieu of her investing. I told them both from the start that he would be working for free for her to work of the amount she would need to have invested. Her husband did about 80%%20of the demo. There became disputes about his work and my friend decided to walk off the project and take her husband with her. We had no written or verbal contract with her husband. We had no contract written or verbal about paying him money, especially if he walked off before demo was completed. Now my friends husband is demanding 40k for work done (demo only on job not completed) because it took him 5 mo to complete the 80%%20working around his full time job. We pay 5k interest only per mo. to our hard money lender and stressed this multiple times. Now the husband wants money for hours worked not for partial job done and has presenting us with a 75dollar per hour bill for the 5mo it took him. He has given us a 20day notice of intent to lien. Is he within his right?