I think the best person to advice you on this topic would be a business consultant. He is trained to assist people with such problems and would be your safest bet to get a right and appropriate solution. There are several formalities and regulations connected with a business which would have to be fulfilled before selling it to someone else.
I know that parts of a business or the right over it can be sold by the method of stocks and shares. Suppose a person owns around 20 per cent of a business then he has a right to sell his 20 per cent to somebody else. This same method would apply for selling half the business too. You would be able to know about more methods and techniques from a certified and qualified business expert or consultant. A legal adviser would also be a help in such matters.
I know that parts of a business or the right over it can be sold by the method of stocks and shares. Suppose a person owns around 20 per cent of a business then he has a right to sell his 20 per cent to somebody else. This same method would apply for selling half the business too. You would be able to know about more methods and techniques from a certified and qualified business expert or consultant. A legal adviser would also be a help in such matters.