Punch-out site without checkout to Ariba?

I have a customer (supplier) who wants its customer (buyer) to punch out to its (would be) punch-out website through Ariba CSN. But once the buyer is ready to check out the shopping cart, the punch out web site should NOT send the basket back to the Ariba Buyer through Ariba CSN. Rather the supplier wants to save the buyer's requisition in its own local system. The supplier wants to manually send the quotes to the buyer. Is this possible in an Ariba Ready punch-out website?

Regards