I don't want to know that person as I don't have any clue about who is he. I am interested in what will happen in the market if that bitcoin is sent into the exchanges because if that happens, the market will get down in a short time. If he sells a large amount of bitcoin in instant sell, then that will impact the price, and we will see another downtrend. I wonder who the analysts that are confused about that are, but I am sure that the analysts will search that person who already makes the transaction.
But even if they successfully found whoever made the transaction, no one can stop them from selling it. If they obtained their Bitcoin legally.