Even the simplest offer where you say "will you take some today, and the rest later" will get you rolling.

The simplest answer is that its not your problem at all.

Simplest to just remove it and put in pex or copper.

This is the simplest option as far as paperwork, but the registration fee is $750.

You will need to evaluate the additional costs and time and if it is worth it to you to pursueTexas is a very simple state to evict,  very difficult to collect

Seems obvious, but there is some nuance and the simplest method is to know your revenue.

They hop from one dwelling to another in a parasitic pursuit of a host, enticing you with the promise of the simplest long-term behaviour of paying their rent at the beginning of each month and keeping your house clean, just enough to ensnare their unfortunate host, no matter how good his intentions or faithful his actions.They show their welfare stubs during their application to indicate that all they have to do is sit and breathe, and out of your own tax dollars will flow in the rent to which they agreed in writing.

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Sounds like a 1031 exchange is the simplest form and would be the best option for him as to the taxes. 

Honestly the simplest thing to do would be to call the code enforcement dept for ALL cities in your farming territory AS WELL AS THE COUNTIES.