Lol what? Which club are you playing with? It's either name after the club itself (eg. Chelsea Stadium), or if you're luckier, it could be named after a legend of the club (including you if you're a legend) like "Zola Park" for Chelsea. It can't just have no name. If it truly doesn't, that's the weirdest glitch I've ever seen. As far as I know, you aren't allowed to name it yourself.