Purchase Agreement Subject to A Seller Obtaining License

[Rich Hupper]

Hello BP

Here's my situation: I am interested in buying a property that has a lot of equity in it. the people on the title will not return my calls however the previous owner ( who is still tied to the mortgage ) has been in communication with me. He is taking the two current owners to court in an attempt to regain control over the property, force a sale and rid himself of the mortgage they current owners were suppose to pay. 

Would it be possible to enter into a purchase agreement with him, subject to him obtaining the ability to sell from the court? Has anyone ever done this before?