On Monday, Tyrion offered to enter into a contract with Eddard for the

purchase of some land. That contract would have been valid and would have

resulted in a payment to Tyrion of $9,000,000. On Tuesday, Eddard sent a

counteroffer to Tyrion by U.S. mail which counteroffer had all the same terms

of the original offer, except that the payment term would be $7,000,000. On

Wednesday, however, Eddard changed his mind and so called Tyrion by phone

and, during a pleasant conversation, told him that he accepted the original

offer. The counteroffer then arrived. Within days, Tyrion then sold the right,

if any, to collect that money to Cersei. Immediately thereafter, Tyrion sold the

right to collect that money to Arya. In what circumstance would Arya be able

to collect $7,000,000 (and only $7,000,000) from Eddard?