I purchased a property at foreclosure and the prior owner left the house over 1 year ago and left everything including furniture, clothes, ect. 

They did not have a problem when they signed the lease and usually when we are meeting to sign a lease the tenants are wondering through the house figuring where to put furniture.  

(Totally outdated furniture can kill even the nicest spaces.)

He also wants to sue for damages of mattresses thrown out, furniture, etc.  

Fill in the pool , take the fenced in pool area and put in a fire pit some pavers , and an outdoor kitchen . ( as money allows ) and make an entertainment area .

This is not only because pets sometimes will damage the furniture.

So mold is relatively abundant outdoors.

The agent we like seems to think that houses sell better with furniture in there, as long as the person is neat, doesn't have ridiculous style, and is willing to allow the agent to show it to buyers.One of the other agents suggested we try to sign the tenant to a 6-month lease and sell it in late Spring/Early Summer.Thoughts? 

It takes a lot of life experience and finesse to deal with people coping with huge life struggles.If I were young and starting out, I'd offer paid services for clean outs and basic staging/moving around furniture.

-Unless you want kiddos breaking your beds during every turn over, don't go cheap with the bed furniture for kids if you plan on having twin beds, etc.