I don’t think anyone will even think Madueke will replace saka, what is Madueke playing that will make him replace saka, which player will Arsenal even be signing that will replace saka for now? I don’t think there is any player, Madueke is just a backup player, and am sure they won’t be using saka frequently again, matches which they known that it won’t really be difficult for them, am sure they will bench saka and use Madueke, or maybe when Arsenal are already winning confidently, then they will bring Madueke into the match.
What sort of analysis is this? Nobody expects that to happen but the over dependency on Saka will eventually reduce. I can remember how Arsenal struggled with productivity from that flank during his absence due to injury, that is all gone now. Also, squad who have won the league in the last three to four seasons had a quality sqaud depth. I also think Mikel Arteta can use Noni Madueke the way Hansi Flick did with Raphinha.
Noni Madueke's arrival wasn't to replace Saka, but rather as a backup player to ease Saka's burden and fill in for him when he's injured.
I don’t think anyone will even think Madueke will replace saka, what is Madueke playing that will make him replace saka, which player will Arsenal even be signing that will replace saka for now? I don’t think there is any player, Madueke is just a backup player, and am sure they won’t be using saka frequently again, matches which they known that it won’t really be difficult for them, am sure they will bench saka and use Madueke, or maybe when Arsenal are already winning confidently, then they will bring Madueke into the match. Rodrygo to the EPL feel realistic as days go by, five games and counting that Rodrygo has being on the bench without playing and today Fabrizio Romano has posted that Real Madrid has told him that he can leave the club which means it is green light for Arsenal to try and make a deal with Real Madrid for his signature.
I'm not sure it will be realistic because Real Madrid only wants to accept the minimum offer around €100 million. Arsenal may be interested to sign him but I doubt that Arsenal can pay €100 million for another new winger. Moreover they have paid Madueke with £50 million, Madueke has the same position as Rodrygo. I think Arsenal will prefer to focus on signing a new striker than adding another new right winger. Well, only Man City which probably can sign him Rodrygo, but they also have enough right wingers. 
- https://www.justarsenal.com/real-madrid-set-a-minimum-e100million-asking-price-for-arsenal-transfer-target/396457
- https://madriduniversal.com/real-madrid-set-e100-million-price-tag-on-24-year-old-star-amid-arsenal-interest/
- https://www.justarsenal.com/the-financial-breakdown-of-the-cost-of-arsenals-move-for-madueke/396431
I don’t think anyone will even think Madueke will replace saka, what is Madueke playing that will make him replace saka, which player will Arsenal even be signing that will replace saka for now? I don’t think there is any player, Madueke is just a backup player, and am sure they won’t be using saka frequently again, matches which they known that it won’t really be difficult for them, am sure they will bench saka and use Madueke, or maybe when Arsenal are already winning confidently, then they will bring Madueke into the match.
Of course, it is just impossible that Madueke replaces Saka. Saka will be always the main option for the right winger, meanwhile Martinelli is the main player in the left winger. Madueke probably becomes the substituted player of these players only. Madueke must accept that he may not play regularly as the starter. He must already realize this condition before he accepted Arsenal offer.