Mikel Arteta had made strengthening his backline a priority after a leaky year at the back. William Saliba is already set to make a difference this campaign after arriving from his loan at Saint-Etienne.But the Arsenal coach wants to partner him up with a left-footed centre-back and has got his wish in the form of Gabriel.A bid of around £27m was accepted from Lille and the Brazilian rejected moves from Napoli and Everton.And he has already adorned himself to the Arsenal faithful with a sly dig at Tottenham.Upon completion of his move, he proudly tweeted: "LONDON IS RED."The common expression is often used by Arsenal fans as a dig at Tottenham, who are only across the road in north London.
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