If FLOT provides 48.1 M, you can either count the big buyer as one of the bidders who bids for 45M, or negotiate a deal based on current prices. The bidder approach is more transparent and fair.
I am concerned that one person will own as much share as a price feed had in normal times. But a broadening of share ownership is good in the long run (assuming it’s not an existing big owner…)
Also i wonder if the kind of huge quick sell will attract traders who are in for quick profit via successful short term price prediction or market manipulation using the huge amount of shares they get in hand. Usually you would want to somehow lock up the shares from selling for a while, or release the shares gradually.