The latest Arsenal injury news ahead of the Gunners facing Tottenham Hotspur in the north London derby as Mikel Arteta offers an update on the fitness of Jurrien Timber. Ange Postecoglou will welcome Arsenal to N17 on Sunday eager to claim his first win against Arteta as the manager of Tottenham. The Australian’s side sealed a 2-2 draw when the fierce rivals met at Emirates Stadium in September. But this week’s clash bares big consequences. Arsenal travel across north London only one point clear of Manchester City at the top of the Premier League table. The Citizens also have a game in hand ov…