It’s hard to conclude that Arsenal got rid of the disappointment attached to their loss against Bournemouth despite their win against Shakhtar Donetsk on Tuesday evening. Ahead of Liverpool’s visit this weekend, there’s still a slightly glum mood around north London, and Arsenal fans are definitely feeling hard done by. Decisions haven’t been going the way of Mikel Arteta’s side of late, who have now received three red cards in only eight games in the Premier League this season. Richard Keys tore into Howard Webb for his actions whilst William Saliba was being sent off last weekend, it’s been …