Fair partnership for helping friend with first RE investment?

[Sam Ohanesian]

I am helping a friend with his first FHA house hack. This will be his first real estate purchase. I've shared a lot of knowledge with him and introduced him to my real estate agent and lender. He has been looking for a place to house hack. I found a 4plex for him that I think he could live for free with. The 4plex does need a little work and the rents are under market value. He will most likely need to find new tenants for 3 of the units to get the rent to make the house hack work. I have a lot of experience in rental management and finding good tenants and told him if he wants we could work out a partnership. He was very interested and I think it could be a beneficial for him and I. What would the structure of a partnership look like in your opinion? I will not be contributing any money, just managing the units, finding tenants, helping with renovations, providing contacts like contractor, lender, etc. Basically ill be his guide through the whole process.