Don't buy that land if you have these types of concerns.
For any further assistance, feel free to contact me on my e-mail "firstname.lastname@example.org"
Shubham Pabbi & Associates
Hi, there is a way out, you can stipulate all the requisite conditions in Sale Agreement (preferably registered one). And further, you can foreclose the Bank loan on his behalf or you can take over the loan.
You may call me for further legal advice, mobile no. 9900237229.