You can offer them cash or different terms to vacate if you wish, but they don't need to oblige.

We own a home in a highly occupied area, near large companies and hospitals.

I have a strong conviction this area will turn around in 5,10, maybe 15 years and soon become highly desirable.

The demand for homes with a bit of land and a shop is high where I live, leading to a larger buyer pool and quicker sales.

I am for sure biased but I would highly suggest using a real estate agent that is a) familiar with that community b) is well versed in selling to non-Mexican citizens and c) has stellar reviews.

High st or Neil ave. 

If so you can look into Cash Re-Fi (not as popular these days with high rates) OR look into Home Equity Loan / Home Equity Line of Credit.

Person/Company buys house and is offered 5-20k to let someone else have the house.

Having the tenant  makes it:A) harder to show the property, making it harder to sellB) prevents a majority of owner occupant buyers from being able to offer on the home.

The VA home loan can be a powerful tool for purchasing a multi-family property, offering benefits like no down payment and competitive interest rates.