Tenant Replacement Incentive

[John Fleming]

One of my properties is a single family, next to an academic hospital, where my target tenants are medical residents. In May of 2018 my three tenants will all graduate and I'll need to replace them. I was thinking of offering them all some incentive to "find their replacements" since they will know some of the incoming residents. Does anyone do anything like this or have any ideas on what type of incentive might be attractive to them? 

Look forward to any thoughts... 

john