Foreclosure with past owner living there

[Ron K.]

Single family bank foreclosure with past owner still living there.  RE listing agent said I would have to do the eviction or work out a rental agreement if I purchased the home.  In addition, there are no showings and I'd have to buy sight unseen (although she suggested I knock on the door even though the listing clearly states not to).  Property is attractively priced.  

I haven't bought a bank property in many years.  Is it common to not evict before listing?  I do plan to meet with occupant to determine if he is a good rental candidate.  I do not want to buy and evict (it's in my neighborhood) so using as a rental and rehabbing later would be my plan.  I am open to thoughts and suggestions please.