So how could I go about putting this on paper to make a deal, what should I say ?
Contracts are very easy to write .. certainly don't bother with a lawyer.
To be honest .. I wouldn't work using the word 'profit' at all.
He could do the following
1) Buy himself a alienware laptop 'for the business'
2) Pay himself £15,000 a month as a COST to the business
3) Buy himself a 'company' BMW 7 series 'for the business'
4) Decide he occasionally works from home, so take a % of his rent out of the business (out of the profit) (and gas, electricity, everything else)
5) Decide to sell his wife company laptops for uber-cheap .. destroying profits but he doesn't care and *really* the laptops are just becoming his
6) Simply not be a good business man, so the business doesn't work
7) After 6 months say 'er .. not quite good enough .. you're fired' just before the profits start coming in
8) Buy stock for the next 5 years, meaning there is no profit. Funny enough you leave because otherwise you can't afford to eat .. so he has had free labour for a year and now has a load of stock
And that's just me brainstorming.
If you really HAVE to do profit -- ask for SHARES in the company. This offers you some protection against just some of the above abuses. Ask for 40% of the shares.
But really, honestly, trust me -- go for a wage. Tell him you'll think about it again in a year's time -- but -- god -- go for a wage.