The seller doesn't want to share mortgage info

[Andre Vitalis]

Quick question. I'm working on a deal where the seller does not want to reveal any mortgage information. They will only tell me that they have owned the property for 8 years and that the mortgage owed is small and current. I've got a solid ARV on the property and want to present the seller with a multiple option letter of intent 1) an all cash offer (deep discount) and 2) one on terms; small down payment with the balance payed back over time. Without the mortgage information, what's the best way to approach this? Thanks.