Typically, some former Chelsea players can truly thrive outside of their respective clubs, as is the case with many Man United players. Madueke, whose primary position is a right winger, like Saka, could be a backup, as Saka remains primarily a winger. However, he can also play as a left winger. It just depends on how Arteta adjusts his lineup with these new arrivals.
However, for around £52 million, Arteta should be able to optimize Madueke's performance. But then again, Saka is far superior, and as you said, Ethan Nwaneri, their RW, is also very young, and his market value already exceeds Madueke's. So, simply making him a RW isn't enough.
Judging from their lineup, their midfield and wingers are truly amazing, with only their CF still lacking. If Gyokeres really joins Arsenal, wow, they'll be a complete squad. They might need one more defender.
Well said, if needed Arteta could use him that way. But with Martinelli and Trossard already on the left wing, unless there's an injury or suspension, you wouldn't really see a right winger being shifted over there.
Numerically, they definitely still need to bring in another center-back. That would possibly be Mosquera. Other than that, if they get the striker deal done, Arsenal looks pretty much ready.