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Not only will the arrival of Ozil offer the Gunners tactical versatility, but it seems that the club's lack of depth in the forward position might force their hand into trying out new formations.
While the capture of Ozil was incredible, the fact of the matter is that Arsenal still failed to address the squad's most pressing needs this summer—the most urgent one being to buy a striker. That especially became true after Lukas Podolski was injured and could miss 10 weeks.
Luckily, Olivier Giroud is in the form of his life—but the reality is that he can't play every single match of a grueling, nine-month season. When the Frenchman isn't available or he needs a rest, there could be other tactical options for Wenger to consider.
Behold, the "false nine" formation—to put it simply, playing without a striker. For a more in-depth explanation, see this excellent analysis by Gene Oliver of Soccer Without Limits, but essentially what the false nine does is drop deep into midfield rather than looking to exploit the center-backs like a traditional forward.
The beauty of the false-nine formation is that, due to its novelty, most defenders don't quite know how to defend against it. Although it's somewhat of a new phenomenon, this formation has shown brilliant results when done right.
The prime example is Spain's Euro 2012 campaign when Fernando Torres wasn't playing up top and Cesc Fabregas was serving as La Roja's false nine. Of course, Spain won the European Championships.
As if that instance isn't enough, Barcelona used the formation under Pep Guardiola in the 2010-11 season, with Lionel Messi playing as the false nine.
While Wenger isn't exactly known for his tactical flexibility, he may have no choice but to field a strikerless 4-6-0 formation at some point this season—unless he wants to throw Nicklas Bendtner up front.
With Ozil added to a plethora of technically skilled midfielders, Arsenal are certainly a team capable of bringing the false-nine formation to English football. Now, exactly who plays as the false nine is up to Wenger and his expert judgement.