#4 Hector Bellerin

The overall reaction to Bellerin's performances this season so far has been mixed. While Bellerin has been instrumental in Arsenal's attack, he did make a number of crucial positional errors in the first two games.
Out of all the players, Bellerin looks to be the most suited to play Emery's style of football. The reason the former Barcelona man made the list is because he is a modern-day defender who could really progress under Emery’s tutelage and tactical changes. However, he still has a lot to prove in a team that has had a torrid defence in the last few years.
The defender must maintain Arsenal's attacking and ball-possessive mentality while also paying attention to defensive responsibilities.
Bellerin must also keep in mind that his place in the starting XI could still be under threat especially after the arrival of Stephan Lichtsteiner, a right back with years of experience and a winning record.