Buyer's Call

A buyer’s call happens in the commodities market, where the buyer and seller agree to a purchase, but the buyer doesn’t want to take delivery right away. She can "call" for the delivery later, given that she's already bought it. The buyer also doesn't want to buy today on the spot market, for fear that the price will go down by the time he takes delivery. So the seller says, “Ok, I’ll agree to ship you the pork bellies at a later date, but you need to buy a futures contract from me at a higher price.” The agreement is made for the same quantity and quality of bellies.

Alternatively, the buyer and seller can set the date for when the price of the transaction will be set.