It's a site that i presume will get very busy with the right sort of advertising Jamie.
However, me personally, i dont like the look of the theme you are using, the category headers and nav bars are way to big in my opinion (heightwise) the theme seems very 'chunky'. not my sort of theme but then again i like minimalistic stuff.
A football forum doesnt need to have a big glossy theme to pull the members in (then again, it is your site) , if you look at one or two of the football forums i use regularly they are very simply designed, fast loading, and the theme doesnt get in the way of the content. Below is one i use
ReadytoGo - Sunderland AFC
anyway good luck with it!