There's no new bitcoin minted and everything you in circulation is the same with old Bitcoin created before.
If you really want to sell your Bitcoin then do it on exchange since I don't really see the point on why you cannot do it. For insisting to do those suggestions made by people in this thread its like you are doing suspicious things.
So for people to eliminate their negative thoughts about you better erase the idea about exchanging your old Bitcoin to new since there's no actually old or new bitcoin thing here and we can sell it immediately anytime we want.