This article is part of Football FanCast's The Chalkboard series, which provides a tactical insight into teams, players, managers, potential signings and more…  After arriving from Brazilian side Ituano this summer in a rather low-key deal, Gabriel Martinelli produced an impressive performance on his first-team debut for Arsenal against Colorado Rapids. The 18-year-old had largely been tipped to feature for the north London's side academy teams over the course of the upcoming campaign, but his display against the MLS outfit certainly raised a few admiring eyebrows. On the chalkboard Reports in recent weeks have suggested that Unai Emery's side are on the hunt for a new winger,...
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