Although the post above is a great idea, and wholesaling has made me quite a bit of money, that's not going to really help you here. This guy doesn't want to do the rehab or any work for that matter...he just wants a return on his money.
Since you'll be holding this property for a long term, you DO NOT want to use him as a hard money lender either. Going back to "Everything is negotiable", there are a few ways that you can go about doing this deal. Actually, there's hundreds of strategies that you can use for this...entire books are written on the topic. Here's a few that I'm most comfortable with:
1. You can use this investor to secure immediate financing on deals at the high rate of interest above, and then you can refinance out to more reasonable terms.
2. You can do a complete partnership where the investor puts up his capital, and in return for: finding the deal, managing the deal, and maintaining the property will receive a 50% share in profits and equity in the property.
3. You could see if he wants to act as "The Bank". He's going to want a bit higher interest rate than the average bank will pay, but not quite so much as hard money would cost you. I don't know how your credit history is, so it's hard to give you a figure on what you'll be paying in interest. Prime is at 5% right now..you're probably looking at 9%-10% interest...but see what he has to offer. "He Who Speaks First, Loses"..:)
Points should be minimal, I try to pay no points, but he may want 1 or 2 points. These are just guidelines and can be tweaked to ensure that both parties are satisfied.
Make sure that there is not a Prepayment Penalty clause. Chances are, you'll eventually want to refinance or maybe cash out early. Even with great planning, life can tend to be somewhat unpredictable. What if you desperately need cash and you decide to sell this rental property for the capital. You don't want to have him cutting into your profits because you are paying him back too soon. If he insists on a Prepayment Penalty, make it is short as possible.
4. You could even have your investor purchase the property, and lease option it to you at a low monthly rent (with rights to sublease the property). You would then sub lease the property to your tenant & exercise your option, purchasing the house at a later date when you can get more traditional financing. (This would be the last pick because you have very little control over the deal in this one).
Best Of Luck,
Rich