Month to month vs lease

[Brian Dickerson]

Hey all, Got our first duplex closed yesterday. Inherited month to month tenants in both units. One has been there 4 years. The other about a year. Of course the property manager recommends getting them to sign a a year lease. I'm leaning toward letting them ride it out then placing a tenant, at possible risk of scaring them off sooner with a lease commitment. What would you do and why?