A good image. The quality is not good but I would say adequate due to conditions. The softness and flat image with huge grain is due mostly to the very high ISO. However, the lighting may determine this setting to get a result at all.
You are not at 500mm. Was the camera supported? A monopod perhaps?
If not, you should get one. They are cheap and most people shooting this kind if subject use one.
Here, you could improve things by darkening the image a bit and adding a touch of contrast. The image would then have more impact.
Sale? Yes, possibly. Several possibilities. The team players if amateur level. Local newspaper, but only on a quick turn round basis. Libraries might have an interest in off the ball action like this as it might have more general appeal. Otherwise the action is only viable for a short time.
Some libraries would demand a model release and that is usually not practical. That is unless the shot is newsworthy, then it would sell as editorial.
The other possibility is if the players are well known. There are then library possibilities.
Quality does matter and you should strive for the best possible in the conditions prevailing.