it's been quite a while since you wrote, but I thought I could answer you anyway. this is how I understand the situation:
Since the bookcompany who gave out Kick Off didn't earn as much as they wished from the manga section, they decided to stop publish some of the books. sadly, Kick Off became one of those books.
Yokaj are still looking for another publisher for Kick Off, though there are problems with the rights wich partly still belongs to the first publisher, and since manga is not as "hot" as it was a couple of years ago, publishers are not very keen to give it out(even if Kick Off has won several prices in Sweden for best comic and even had a theatre based on Kick Off!). It seems that we fans just have to wait for now :P