You are welcome for your appreciations.
A pre-emption right, right of pre-emption, or first option to buy is a contractual right to acquire certain property newly coming into existence before it can be offered to any other person or entity
If it was a property jointly owned and divided among the shareholders, then the question of pre-emptive rights may occur.
Whereas your neighbor is no where related to you neither he was a co-sharer nor has any such rights by any contract, hence your fears in this regard is unnecesary and imaginary.
you do not have to be bothered about the neighbors if you have decided to sell your property belonging to you with clear and marketable title on you