Plumb Images are the company who take the photos for the programme for Leicester City. The company also follow the club all over the world when they play in pre-season they also follow youth teams and training and take photos of them.
Here as the player is celebrating they may have used a different camera all together and not a 1DX as some football photographers will take a Canon 5D Mark III with a 24-70mm lens on to take photos of the celebrations or actions close up so I feel that is probably what they have done here. In terms of shutter speed I would guess it is probably somewhere between 1/250 and 1/500 of a second. I personally had a speed of 1/400 when I took a photo of a celebration so it could be around that sort when it comes to aperture I would say either f/2.8 or f/3.5. The shutter may be higher as the player is running in his celebration whereas in my they weren't so I would guess it be around 1/600 to 1/750.
This photo shows several youth players celebrating a goal, here the players aren't moving that quickly so a shutter speed of around 1/400 is more likely than the image above but because they are likely to have used a 1DX due to the distance away from the photographer but they may have had a Mark III with a long zoom lens on it to take this photo. Here yet again the lettering at the back is a little distracting and if it was blurred out a bit it would be a lot better but this is just a minor thing so it is a really strong image that would be used in a programme regardless.
These photos show that Plumb Images are a company that can produce some really strong football images and just looking at these and others they have produced have made me eager to look through Leicester City's programmes to see what else they have produced.