Because your answer was yes to all of my questions as I mentioned earlier your brother has the ability to bring an action against you for compensation because he paid for half of the land that was sold under the doctrine of constructive trust.
Any claim that he would make would be based on the current value per acre today not what it was when you purchased it.
I dont know how he calculated the $1998, but there is a claim that is able to be filed against you.
Even though the land has been sold you have received the funds and he can claim against a share of those.
If you still have any of the land he can make a claim against that as well.
You have the same rights against his land.
Under the doctrine if he was to make a claim his claim would be against the additional 500 acres you are in plus the 3rd lot of land and for each of you dictate what you currently have.
To the doctor would only apply to the extra 500 acres you have and the 3rd lot.
looking at the verbal agreement where he is allowed to use half of the 3rd lot for his own benefit, under the doctrine he owns that half share and he is not getting any benefit from it.
Can you see where I'm coming from?
The issue for you at the moment is to try and avoid any possible future claim on the funds that you received from the sale of plus any land that you still currently hold from the initial purchase.
The doctrine of constructive trust says you are holding half share in the extra 500 acres and the 3rd lot in your name on behalf of your brother, because he paid 50% of its purchase price.
I'm not saying he has raised the doctrine, but I cannot see why he would be asking for money unless he has been made aware of this and is seeking some form of compensation.
You understand what I'm saying?