You can't be completing for the league and  champions league with Gabriel Jesus and Nketiah as your strikers. I'm sorry but those are not players you rely on. They're good to a certain level but they're not world class. Arsenal needs at least one world class strikers. A striker than can creat something out of nothing. A striker that can lead the attack. The lack of that kind of striker won't be felt much now because Arsenal are playing well and scoring goals, but the time things get though and they'll need a striker that will score the only opportunity needed to win the game, that's where you'll understand how important a world class striker really is.
I'm not even too satisfied with Vlahovic that Arsenal are going after. He's good but I don't think he's what Arsenal need.
I feel Arsenal should go for a player like Osimhen.