Central Attacking Midfielder - Dani Ceballos
When Arsenal signed Dani Ceballos on loan from Real Madrid this summer, Unai Emery solved a glaring issue in the Arsenal team. Emery's tactics require a very dynamic number 10 and none of the current players in the team, including Mesut Ozil, fit the bill. However, Ceballos is tailor-made for the role, which is why Arsenal were so eager for his services.
The Spaniard is equally adept at a deeper role, so his versatility could be an asset in tight games when Emery could opt for Ozil's class to open up the opposition. Another player who could play this role is Philippe Coutinho, who is linked to a loan deal with the Gunners. If an agreement can be reached with Barcelona, the Brazilian would be the front runner for the No. 10 position.
Left Forward - Pierre-Emerick Aubameyang
The Gabon international was Arsenal's top goalscorer last season, scoring 31 goals and picking up 7 assists in all competitions. However, the reason he finds himself in the left forward role is because Unai Emery's system implements a very dynamic front three. Pierre-Emerick Aubameyang, as such, is expected to switch position continuously through the games.
Aubameyang picked up the Premier League Golden Boot, scoring 22 goals in the league. His outstanding finishing skills have been on display in pre-season as well, and the Gabon international is also menacing on the counter.