How to Get Tenant to move out or pay higher rent

[Brian Dvorak]

Here is the situation - I purchased a home in Indianapolis and the seller claimed the rent was $650. The tenant claims she has been paying $480. When I asked her to provide a copy of the lease, she sent one that expired a year ago. The market rent in the area is $700. Any tips on how to either convince her to pay close to the market rent or get her to move out?