Option given by one party (optionor) to another party (optionee) to purchase something. Some of the provisions included are: exercise price, exercise period, transfer of optioned goods, nonassignability of options, etc.
This agreement allows one party (the owner) to grant another party (the grantee) the right of first refusal. The right of first refusal allows the grantee the option to purchase an item when a 3rd party offer is made to the owner. The grantee will be required to match the 3rd party offer.