#1 Granit Xhaka

Of the players that remain in the leadership group at Arsenal, Granit Xhaka is the best option to lead Arsenal next season. The Switzerland international has the experience of leading his country and with inherent leadership abilities in the player, he would be a good pick to become the next captain of Arsenal.
Central midfielders are always good captaincy materials due to their position on the pitch. Xhaka is one of the very few Arsenal players who are extremely noisy on the pitch. On most occasions, he would be shouting at his teammates or directing the play thereby proving his instincts as a leader.
Xhaka played 29 games in the Premier League last season and although he did have a few underwhelming performances, the Swiss will always be an asset to the club with his presence on the pitch. When required, Xhaka has also played in the defense during a crisis and Emery could benefit from such multi-utility players.
At 26, Arsenal can invest in a long-term leader by giving Xhaka the captain's armband. Hence, Unai Emery should pick him as the captain next season.