Really, when you begin to rank bad things that can happen to a football player, the coronavirus is pretty far down the list.
Every play that these guys run, they quite literally run the risk of being confined to a wheelchair for the rest of their lives. There's paralysis, there's amputation, there's CTE, there's eye gouging and groin stuff going on at the bottom of the pile... hell, if the stars line up just right you could even contract HIV.
If I were a player, each of these would be of greater concern to me than the risk of contracting the lamest "plague" that has ever been inflicted upon mankind.