Arsenal shaky this season and they're no longer in the top four this season after they declined in their performance in matches. Arsenal headcoach, Mikel Arteta have numerous options to triggered in the transfer window. He has scouts for potential forwards in the team. Bukayo Saka, Gabriel Jesus, Gabriel Martinelli, Edward Keddar Nketiah and Leandro Trossard, these are the frontlines that are held for the solidable foundation of the club. They're important and if Mikel Arteta valued them, he would worked on developing them and not search outside for new strikers because I see nothing wrong with the current condition of the club.
The above players that you mentioned are the future of Arsenal but I think the manner he used them is controversial. Gabriel Jesus and Nketkiah contributions can never be denied but I think last season when Jesus went for Injury, Nketkiah prove himself as a good center forward for Arsenal, even this season has been incredible result as well because he has 6 goals for the season while Jesus has 7 but priority is always given for Jesus to start matches. For example, their last match against Newcastle, they started Havertz and then later replace it with Nketkiah in 88 minutes, isn't that a bad balling.
The second leg is going to be a motivation for Arsenal seriousness, I think there is going to be a big battle, the losses they have had over the weeks is enough to do well and better. If Arteta is able to bring new players as the match progress, it is going to bring a lot of PR and will help to win matches. I just hope even if we don't take the first place in Premier League this season, we should be able to finish among the top 4.