Ethics Question: If I allow Tenant Out of Lease, If they Purchase

[Drew Snyder]

So I heard this idea on the BP Podcast -- 

But are there any ethical considerations when offering tenants the ability to get out of lease, if they buy a property through you? I assume this is above board, but would love some feedback. 

[Drew Snyder]

But what if they are buying a property and want out of the lease and they are not buying through you?

You have some very small leverage over them. It's optional though, so I'm hoping Im good to go.