While I consider Arsenal favorite for the Europa League title, Manchester United is not favourite for me at the moment. Manchester United will play their next match against Barcelona. If Manchester United is able to win against Barcelona, then I would say that Manchester United has the right team to win the Europa League title.
I saw Manchester United's performance in the group stage. Neither their performance nor their match strategy was good. If you perform like that, it is impossible to win the title. Their performance will inevitably improve. At the same time, the internal conflicts of the party should also be resolved
There is no doubt about quality and performance of Arsenal in this season but still things are not easy for any team because now competition is increased, and we will have some tough matches in coming days with few teams are already dropped from Champions League and now looking for better end of this season even mostly peoples are feeling these teams are not going to have any good contribution into UEFA Europa Cup but still it has never been easy to win competition like this.
In this season Arsenal is doing amazing job, and we can expect improvement in coming weeks but can they keep this momentum, and we will be able to watch them as winner of the two titles because they are capable of having amazing stuff and new player's entry can bring more success with good and strong competition.