After failing to secure the league title last season as new Rivals Manchester City outplayed them and finished top of the table last season, the club has reacted well by investing hugely to boost the squad this summer. Arsenal now have another chance to compete for the league and every silverware next season. As Kai Harvertz has said that he is looking forward to winning a trophy with Arsenal next season.
There are many people who are not so sure about Arsenal performance next season but I as an Arsenal fan will say that I agree with your argument that although many doubt Kai Harvertz performance at Arsenal, I am sure that if a new player meets and is trained with an experienced coach, will definitely will create extraordinary talent in the next season with Arsenal.
Some people support Manchester city but I will support Arsenal because for sure City next season will have a target to win the Champions League again so consistent they will be a little disturbed by maintaining the physicality of their players so that this opportunity will be used by Arsenal to get more points to shift City position from the Premier League standings.
I hopes are not too big for Arsenal, I just want my favorite club to win the premier league, to prove that Arsenal can give the best for their fans.