The former France international believes that the Gunners are at a high level after recruiting Mesut Ozil but feels that the club must expand their squad even further in JanuaryFormer Arsenal midfielder Robert Pires has urged Arsene Wenger to carry on spending in order to maintain the club's title push.
The Gunners sit at the top of the Premier League after taking 16 points from their opening seven games, while the club also have a strong footing in their Champions League group after beating Marseille and Napoli.
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"If you look at all the successful clubs who won titles and trophies, they always buy after they have been successful," the Frenchman was quoted as saying by the Sunday Mirror.
"There is no question that Arsenal are at a high level at this moment. They are playing to the kind of football played during my time at the club. And Ozil – well, he is world-class.
"But their appears to be a new financial philosophy at Arsenal now. Arsene can spend money, more than he has been able to do before and I believe he should add to the squad when he can."