I wouldn't close if previous tenant is still living there.
I could ask the previous owner hand over the rent or evict the tenant. Now what you can do is to inform the tenant's lease is involid. They need to move out or you will evict them.
I could ask the previous owner hand over the rent or evict the tenant. Now what you can do is to inform the tenant's lease is involid. They need to move out or you will evict them.