Ex-Tenant (squatter) occupied properties

[Shannon Bliven]

Hello!
I am currently interested in purchasing a pre-forclosure property in Nashville TN.
The property details state that there is an Ex-Tenant occupying the residence that the current property owner/landlord has already completed the eviction process but the squatter will not leave.
We will want to flip this property and are concerned about what we can do about the tenant after purchase (if anything). Has anyone dealt with some thing similar or know what the process looks like and how long/ cumbersome it may be?

Thanks!