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Per Mertesacker wants Arsenal to be more ruthless (Image: GETTY)
"Unai Emery is a hard coach and is totally focused on what happens on the grass.
“That is his main focus - to get us back in the Champions League.
"It is exciting that I am part of that process.
“People want to see results but we need to make sure the change happens in the right way and not to rush it too much."