In as much as Arsenal are the kings of the FA cup, they've got a lot on their plates this season with the league, Europa, and FA cup. They do not have the squad depth to manage all these competitions to the end. They need to be careful or players can get injured or fatigued or worst, they can lose all trophies and go trophy less this season. I really do not want that to happen to them because they have been pretty impressive this season. It's a good thing they are no more in the Carabao cup. I think they shouldn't pay much attention to the FA cup since they've won it multiple times and focus on the EPL which they haven't won in about 20 years and the Europa which they've never won before.
It will not be easy for arsenal to be playing three different competitions because I don't think arsenal have better players than those are first 11 squad playing in the premier league competition and with this, the club just need to focus on two out of the three competitions the arsenal team is playing which is premier league, europa, and FA cup or the club to signal better player very soon because it wouldn't be easy when like 2 players go for injury.the player can even easily get weak if their playing too enough competition. Watching arsenal matches in premier league is only hard for them to even sub.
With Arsenals current form, they may want to try retain their performance by using more B team players in their FA games, seeing that they have more trophies there compared to the EPL and Champions league in total.
Yes, as for now it is second squad I am expecting arsenal to use in their FA cup match that is coming against Oxford united, I don't think that Oxford united squad will better than those arsenal second squad.checking Oxford Utd record this season I discovered their not in good form in league one competition,infact team squad is weak for being position at 15 in league one table.