Which comes first in a preforeclosure: contract or call the lender?

[Patricia Cote]

My first time dealing with a property that has been served lis pendens but not the final foreclosure notice. Seller agreed to let me contact their lender for payoff amount.  Do I get it under contact first or call the lender for the payoff / short sale first?  Seller wants to sell it to me for the amount the lender will accept. Thank you!!!