Unai Emery has made a real impression on the Premier League, not just for turning Arsenal's fortunes around with a 22-match unbeaten run, but for his willingness to adapt his tactics, rotate the squad and make many, many half-time substitutions. The interval changes often inspired the Gunners to some memorable come-backs and victories, including a 4-2 victory in the North London derby against Tottenham Hotspur in early December. This quality often made Emery unpredictable, flexible and hard to prepare against for opposition managers, and perhaps this is part of the reason why Arsenal's form against the Big Six has improved so significantly this season. However, Emery oversaw an awful...
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