just edit the team kits... like this:
1. start up the game
2. go to the edit option
3. then in the edit option... go to the edit teams
4. pick an team to edit... For example: Arsenal fc
5. go to the strip option then pick an strip to edit over
6. go to marking option
7. then chest logo and yea you problaby want to remove the emblem first by going in the emblem opiton
there... easy!