Land exchange case

One of our client want to exchange his agriculture land with commercial land, land is heritage and his brother land is also situated beside client land, our client do not want to sell the land to his brother as his brother want to purchase the land.
Need your highly technical guidance on both issues.
1. What kind of issue we can face if we made a deal with parties.
2. What type of steps client's brother can take if land not sold to him by his brother.

Thank you

You should consult proper lawyer. You will land yourself into trouble as it seems without a lawyer.

Brother of your client can do Shufa probably on you.