Also, if they seller has no money to put up because of the bankruptcy, what are my options even if I win a case against him?

In other words, landlords are expected to be a player in social benefit programs involuntarily.

The only efforts taken to sell this property so far have been listing with multiple local realtors and telling friends and family in the area about the condo for sale, offering a finders fee for whoever is able to find a buyer.I am using this opportunity as a chance to practice my ability to market & sell real estate, and perhaps win myself the commission.I am not aware of any central marketing systems in Colombia similar to the Multiple Listing Service, and craigslist doesn’t exist in Colombia either.

You won't win based off of that.

Win win.

Keller Williams after the 2008 crisis:What a seller can do to move a property in a recessionWhat Sellers Can DoThere are three distinct players in a real estate transaction: the seller, the buyer, and if financing is involved, the lender.When markets shift, the tide shifts as well.

I'd recommend hanging around local REIA events and getting to know some of the local players. 

Shortly they will take his home and I know for a fact he won’t be able to pay any taxes anymore.How can I structure a deal where I can create a win win situation for both of us where he can walk away with some money, and I can buy his property before the banks takes it.I was thinking about offering $150k$100k to pay off the loan$20k to pay off the tax debt$30k so he can start again somewhere elseAny feedback is appreciated Thank you

It is a great way to put low money down and set terms that can be a win win for both sides. 

Chances are the seller will pick option 2 and everybody wins.