Arsenal technical director Edu and manager Mikel Arteta (Image: GETTY)
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He said: "In order to build, you need to win, and we had to find a way to give a little bit more stability and be a little bit more unpredictable with what we wanted to do.
"We found a different formation that I believed could suit us, and it did, in terms of results.
"We want to have versatility. We will be more difficult to control if we are able to master two or three different formations without driving the players crazy. Always with the same principles, but being able to change system, and to attack and defend in different ways."
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