suboffer
A suboffer is a secondary or subordinate offer that is contingent upon the acceptance of a primary offer. This concept is most commonly encountered in real estate transactions, but can also appear in other contractual contexts. In a real estate scenario, a buyer might make an offer on a property. If that offer is accepted, but the buyer has a condition to fulfill, such as selling their current home, they might also present a suboffer to the seller. This suboffer essentially means, "If I successfully sell my current home, I will proceed with purchasing your property."
The seller in this situation would then be aware of a potential secondary transaction. They might accept