In my opinion I don’t think just signing a striker for Arsenal settles the problem for not winning trophies. Arsenal lack that winning mentality and strategy to push cross the line when they need to. For three seasons now they have always come close but failed to push through at the very last point. If signing a striker will help Arsenal get it right then thank heavens but I still feel it is not enough.
I'm not an Arsenal fan, but I disagree with you that Arsenal lacks a winning mentality because if it were true that Arsenal lacks a winning mentality, they couldn't have finished 2nd in the Premier League table for 3 consecutive seasons. In my opinion, I believe the lack of a quality striker was the reason why Arsenal failed to win the Premier League title when they were close to winning it on 3 occasions. Since Arsenal has signed Gyokeres, I am seeing them to win the Premier League title next season unless Gyokeres fails to replicate what he did at Sporting CP at Arsenal next season, before Arsenal misses out on the Premier League title again.