Final answer:
Under these circumstances, the broker has no legal right to a commission and must prove that they were the procuring cause to collect a commission.
Step-by-step explanation:
Under these circumstances, the broker has no legal right to a commission. In order for the broker to be entitled to a commission, they would need to be mentioned as the agent in the offer or escrow instructions.
The broker must prove that they were the procuring cause of the sale in order to collect a commission. This means that they must show that they were the one who found the buyer and brought them to the seller.
If the broker is not mentioned in the offer or escrow instructions and cannot prove that they were the procuring cause, they do not have a legal right to a commission.