I would like to sell a rental property which has one tenant that a realtor who was managing for me, placed in there almost 2 years ago.

This tenant only pays $325.00 monthly which does nothing for me other than help pay the property tax.  This is a quadraplex out in Starke Florida which has one vacant rentable unit, while the other two need rehab. My current job as a truck driver takes up so much of my time that I no longer can commute to this property at my leisure, much less rehab or repair anything. The current tenant happens to be elderly, on disability and has had a recent surgery. She pays the rent on time so far, but I think If I can sell this property for a break even or a small loss, I could find me a cheap franchise to completely get away from rentals someday. This tenant is on a month to month agreement which hopefully benefits me here in Florida. My concern as mentioned to me by a realtor that I wanted to list under told me that the tenant has to sign the lockbox addendum. If I have no cooperation from this tenant will I be able to easily evict her to be able sell the property? Could I sell it to another investor if I could show proof she does so far pay the rent or did the realtor who managed the property really screw me over with this now concerning situation. 

     I have another rental which I am thinking about selling and the tenant who also pays fairly timely just told me today of this post: " There are soft spots all over the entire floor of the modular home they are renting. I just set an appointment with a Home inspector for next week to check the floor issue. If I have to for safety reason the modular home I will have condemned and sell it for whatever I can at a later date. Im Not caring too much about rental properties anymore since im stuck with my current emprisoning career.