As you said, you have no legal claim to the property so you actually have legal rights to file a memorandum since you have no interest.

With any formal probate sale in Arkansas, there must be an appraisal of the property and then an Order by the probate judge approving of the sale.

We have a legal 2-family house under contract in Roxborough, Philadelphia.

The legal agreement you will have with them as the new owner will be what you have to honor - that should give the terms upon which you can cancel the lease or when it will expire and you can choose to renew it.  

I wouldn't have approved of this particular tenant, but when weighing the cost of turnover, I think its worth putting her on a month to month lease to give her a chance. 

You are going to want to talk to several professionals in your state for this one as it is a legal maneuver that amateurs or even professionals not familiar with the details of your situation on the internet probably aren't going to be able to help with much.

Sometimes banks are hesitant to approve an owner occupant loan for someone moving from a SFH to a MFH because they suspect mortgage fraud.

My husband worked at legal aid until just recently and spent a lot of time in eviction court while he was there.

In Canada we aren't allowed legally to take a deposit for potential damages, instead we take first and last months rent ahead of every lease . 

Its always better to start the pre-approval so you know your eligibility.