Mikel Arteta has a huge decision to make when it comes to one key position in his Arsenal starting XI for Sunday’s clash with Manchester City. There are plenty of nailed-on starters in the Arsenal squad these days. When fit, the likes of Bukayo Saka, Martin Odegaard, Declan Rice, William Saliba, Ben White, Gabriel Martinelli, and David Raya are all essentially guaranteed to be picked week in, week out. There are still question marks over a couple of positions ahead of this weekend’s trip to the Eithad Stadium. For a start, on the left wing, Martinelli is a doubt due to injury. On the opposite …