What to offer for this opportunity?

[John M.]

Hi guys - There was a foreclosure auction on this specific property several months ago. It didn't sell and got bundled with a few others which was purchased by 21st Mortgage Corp. I've reached out to them to buy it and they said they would evaluate it and get back to me before it's listed on MLS.

I'm not sure what to offer on the property.  Here's what I know:

I can see the original (foreclosed) mortgage was for $220k over 30 years. Assuming minimum payments for a few years, I'm going to assume the balance was around $200k.  The assessed value is approximately $220k.  And the market value is around $300k.

The last bit of paper I found on the property said it switched hands for $1k. 

Understanding that the property did not sell at auction when it was listed (assumed $200k), what should I offer here to entice them to sell?