Mathieu Flamini has rejoined Arsenal on a free transfer, becoming Arsenal's second signing this summer after Yaya Sanogo joined from Auxerre in July.
Flamini has been training with Arsenal during pre-season after being released by Italian giants AC Milan at the end of last season.
"We’re very pleased Mathieu has agreed to re-join us," Gunners boss Arsene Wenger told the club's official website.
"He is a player of real quality, with a fantastic work rate and great mentality. As we know, Mathieu is a strong midfielder, but is also is comfortable playing in defence too. He is a very good addition to our squad."
Flamini first joined Arsenal in 2004 and made over 100 appearances for the Gunners before joining AC Milan on a free transfer in 2008.
He is the fourth player to re-sign for Arsene Wenger during his stay at the club with Sol Campbell, Jens Lehmann and Thierry Henry also returning for second spells with the Gunners.
Many people are debating if Flamini will be picked in the squad for the North London derby against Tottenham on Sunday - a very big and important game for both teams. Personally, I think he should feature as he has played for Arsenal before and knows Wenger's style of play.
The Frenchman is supposed to be a squad player but with Mikel Arteta injured, I believe he will be played on a regular basis - especially if Wenger doesn't go out and splash the cash on some big players.
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