Unai Emery does not know if his Arsenal squad is better than last season's - even after the club broke their transfer record during a summer of eye-catching signings. Nicolas Pepe was the star buy of a busy transfer window, the winger joining from Lille for a fee which could eventually exceed £70m, defender David Luiz arrived from Chelsea on Deadline Day along with Scotland left-back Kieran Tierney. The Gunners - who host Burnley in Saturday's early kick-off - had already landed Real Madrid midfielder Dani Ceballos on loan with 18-year-olds Gabriel Martinelli and William Saliba also coming in. Going the other way, Arsenal lost Aaron Ramsey to Juventus, Petr Cech retired and Laurent...
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