How do I approach my tenant - I want to pay him off to leave

[Olga Shkolnikova]

I have a buyer for my 4-fam house Jersey City, but this buyer wants house to be delivered vacant. Unfortunately i have a tenant that does not seem to want to move out - how do I offer money ( In would pay them to leave). Should i approach them with a  lawyer? Is there some typo of a "generic legal notice" that people use in similar circumstances? I only want to pay when they vacate the house,  but i assume i will have to put money on some kind of escrow account before they leave.