Arsenal need to buy defenders, admits Johan Djourou.
"We probably need defenders. We are a big club and we need them. I am not worried. I am ready to fight for my place and to be a better player.
"To be the best, you need competition in every position. It's good Arsenal are looking to spend money.
"People say the likes of Manchester City and Spurs are spending money and that it will be tough. Last season, although we finished fourth, we proved people wrong most of the season."