-snip-
Oh right, haha. You were talking about the transaction fee in order for the NFL team to buy the bitcoin in the first place. I thought you were talking about the network transaction fee, which will obviously just be a few cents regardless of how much bitcoin is being transferred.
Any entity buying such large amounts of bitcoin will be doing it via some OTC desk and will be able to both shop around and also negotiate an acceptable fee. As an indication, Phemex OTC has fees of 0.08% for orders over $500,000:
https://phemex.com/otc/legend-tradinghopefully those nfl players have good tax filing skills because they're going to need them when they report all their trades to the IRS. they might not think of themselves as traders but the irs does...