#1 Leadership

The role of the captain has been a joke for several years at Arsenal. During the final years of Arsene Wenger’s tenure, captaincy was used as a bargaining chip to convince star players like Robin van Persie to stay at the club. After the Dutchman left, the skipper appointed to lead the club often got benched due to lack of form or injuries. Vermaelen, Arteta, and Mertesacker were appointed captains in spite of the fact that they lost their starting berths to other players.
Unai Emery’s tenure did far too little to address the issue. Laurent Koscielny has been appointed the captain with four players acting as his deputies. With Koscielny and Petr Cech most likely to leave the club next summer and Ramsey yet to commit his future to the Emirates, Xhaka and Ozil are the only two of the appointed leaders with long-term contracts.
With Ozil being Ozil, Xhaka is the most likely candidate to captain the side. He is vocal. Never one to shy away from a fight, his aggressive nature rubs off on the team. Having him in the team ensures aggression and consistency.
Look at the way he gives advice to young Reiss Nelson after congratulating the youngster for his goal and making him aware of his earlier mistake.