Answer:
He withdraws counteroffer before it is accepted by the buyer.
Explanation:
Offer is a formal acceptance by a person to either purchase or sell a property or thing available or put for sale. A counteroffer is made by the other party by rejecting the offer made by the offeror and putting forth another offer before the offeror.
A counteroffer if accepted by the offeror stands valid and the offeree cannot revoke it. However, he may revoke it before the offeror accepts the counteroffer.
In this case, the owner can accept the better offer if the offeror has not accepted the counteroffer.