let me give u my estimates. the last i shot a football match, it was at jalan besar stadium where i can get up close and cosy.
at the sidelines. 70-200mm on a 60d. my shutter was around 1/500, iso around 1.6k. i'm either shooting at f2.8, else at f4.
chances are, from the spectator stand, at an INTERNATIONAL stadium, especially EPL matches, u will not get a good enough shot. 300 mm * 1.6 is about what. 480mm at 5.6 (based on ur equipment)? if i shoot on the field, i give up shooting beyond the midfield line (and thats me at 200*1.6 at 320mm f2.8) . remember that this is shooting from the on the field. i seriously doubt that shooting from the spectator stand will get u anything at all.
dun just consider whether u can bring ur camera or not. consider if u can even get a photo, on both the focal length, the image size, image quality and ur exposure settings.
if ur expecting to do sports photography, i'll say forget it. if its just a few photos of the crowd, a birds eye view, perhaps.
simply put it. its too darn far for u to shoot much.
just hope u understand and not get ur hopes too high up. sports photography is pretty much out of the equation.
just give u an estimate. 200mm, from the corner shooting right across to the other on the same half of the field. this is just barely hitting the mark, at a small stadium in SINGAPORE.
and if u compare.... this is old trafford.
unless ur smack right at the front seat..........