This can indeed still happen but in the current conditions winning the European league and EPL clearly requires a very big effort for them even though at the moment their consistency is still maintained but we also know that Arsenal sometimes change from time to time and cannot be predicted so this it can still happen but quite difficult in my opinion.
What things have you seen at Arsenal this season? So it seems you are still in doubt for Arsenal who have to focus on the Europa League and Premier League this season. Because for Arsenal this season is a very good opportunity for them to win these two very different competitions and so far Arsenal have also shown very positive performances and unusual abilities in every game.
It's not easy for a team to win two competitions at once, even though there are so many clubs that have done it but it takes a lot of concentration to get two titles in two prestigious competitions. Arsenal are trying to get to the podium in the premier league and Europa League trophies, their impressive performance since the start of the season must be maintained in the next match. It is possible that Arsenal can win two prestigious trophies at the same time as long as they are able to give their best performance by beating the opponents they face in every match.