By Daniel Orme Neither Mikel Arteta nor Pep Guardiola need telling how important Sunday’s Etihad showdown could be. Table-topping Arsenal travel to Manchester City for a game that could be decisive in the race for the Premier League crown. The Gunners currently have a one-point advantage over the holders. While each side will be doing their utmost to earn victory, Liverpool will be keeping a close eye on the result as they too attempt to take advantage. With such a high-stakes game, there is plenty of thinking for both Guardiola and Arteta to do. Both teams have however been bitten by injury p…