Not only was he the cornerstone of a rapidly improving defence, but he scored the goal that secured a top-four spot for the second season in succession. Koscielny added an acrobatic effort against Newcastle to a scrappy strike at West Brom to be Arsenal's final-day saviour once again.
In 2013/14, Koscielny will hope to be a more consistent presence in the Arsenal team. If he can stay free of injury and maintain his recent form, he could emerge as the squad's most important player.
Go on to the next slide to discover five reasons why Laurent Koscielny could be Arsenal's pivotal player next season.