1. Whether a partnership or franchisee, the agreement conditions should be in a such a way that it would not prove detrimental to your very existence.
Franchisee agreement may not be feasible, instead you may agree for partnership on the terms by which the decisions shall be taken by you alone and the other partner shall invest and remain a sleeping partner, of course it would depend on the circumstances.
2. Leave and licence agreement wold be termed as subletting
hence it may not be advisable.
3. You can include him as a partner on the terms mutually agreed between you both and sail safely.
4. If this is a partnership business, then you need not take consent from landlord, you can remain tenant on your own and let the partnership company pay the rent.