LBC,
It really depends on their individual situation and the season. If I’m a seller and I have a vacant house I can put someone in until Spring it might make sense. The challenge is that tenant occupied properties are tough to show to buyers because of tenants rights. They also tend to be bad housekeepers because they arent motivated for the house to sell and them to have to move.
I would go directly to owner if you could. The agent doesnt want them to rent it particularly after spending alot of time, energy and money marketing a property. You didnt hear that here:)