Reports have claimed that Mikel Arteta was absolutely convinced he was going to complete the signing of one player from Chelsea last summer. According to ESPN, the Arsenal boss was even privately telling some of his coaches that it was a done deal, however it did not come to fruition. Chelsea saw a busy transfer window take place last summer, with a huge turnover of players who were once key to the club. Chelsea spent and sold big last summerThis was to make way for new signings, including club-record buy Moises Caicedo. One of the players who moved on who many had expected never would was Mas…