It is time for Mikel Arteta to get busy in the transfer window as Arsenal will finally have a chance to play in the Uefa Champions League again after missing out this major tournament for such a long time. I think Mikel Arteta might need to get in better centre-back defenders as their defense does look kind of shaky whenever their opponent launch a fast counter attack resulting in Arsenal conceding goals.
Yes, that's something they have to do, because they will be in a big and competitive competition, the English League and plus the Champions League. Like it or not, they must make improvements so that their squad is stronger and more solid to navigate the coming season. They have a good squad at the moment, but I think it's still lacking, especially when they start to look like they're dropping as the competition starts to come to a close. They will definitely experience a very busy schedule, so they must prepare for this in earnest. Main players and second tier players have to be equally good, because when the schedule is busy the players usually experience fatigue which in the end they have to rest.