The logo should be dynamic, cool, modern, raw, grungy, edgy & fresh. Have to capture the passion and excitement of soccer/football without using excessive effects or imagery.
Colors: Orange, Greys, White, Black, even some Green (use green to a miminum). It's important that the logo could adapt to different color schemes for different branding purposes like t-shirts, media print, business cards etc. Ideally/primarly work on a basis of a black background.
Ideal logo: Adidas, Nike and football videogames graphic styles in terms of the sport. But with a more edgy and raw feel to it.
If you plan to include a football / soccer ball then make sure to use something with new patters like the latest Adidas or Nike ball. The old patterns (squared) are pretty much out today.
Format: The format should be in PSD and also in vector format (filetypes .eps/.ai/etc).
IMPORTANT! DON'T use an resemblance to the current logo or site/theme. The current design will be changed shortly and we want a new fresh logo for this.
UPDATE! Make sure you read our comments made in the competition thread of what exactly we are seeking. We have given you references to logos we like that have been submitted so far.