How do I settle "Cash for Key" before Tax Auction?

[Robert Huizar]

I have a friend whose property will be going up for auction soon due to delinquent taxes and failure to pay on their payment plan and they have no intention to pull it out of auction.  I offered them a sizable amount of cash to handle the matter outside of auction, and to my surprise, they agreed seeing that they were going to abandon the property anyway.

Whats the best way to handle this type of transaction?  Quitclaim with disclosure?