This question was closed twice. In between I edited it to attempt to highlight the differences on why this question deserved to stand on its own feet. It would be wrong of me to re-open it again, so here I am on meta, asking for the communities assistance.
In my mind, this question is not asking to give away cards in any way, the querent is asking to make a valid trade. Furthermore the question has a great answer already. In that the problem is that the trade offer received is not valid per the rules, AND the querent is not obliged to accept any offer which meets the original request.
The linked duplicates focus only on the illegality of the proposed trade. I do not believe that was the intent of either party in this question, but merely a side aspect of the answer.
Anyways, vote as you will. Thank you for considering this.