Short Sales - Subject to?

[Hugo Alves]

I'm looking into purchasing some property in my area and my new to investing. After reading, watching many video and gaining a ton of point of views on investing, I came across this question....

Can I legally enter into a "subject to" agreement with the owner while they have a property up for sale as a short sale or anytime during the foreclosure process?

Thanks in advance for your insights and help.