The Europa League is getting competitive. Renowned teams like Barcelona, Manchester United, Arsenal and Ajax will play in the Europa League this season. This will increase the quality of the Europa League and make the league more competitive. So the Europa League cannot be neglected this season. It is impossible to predict which team will win the Europa League title.
We can add Juventus to those teams. This year, the European league has become a more challenging league as a result of the teams coming from the Champions league. At this stage, it is more important to finish the group leader in order to stay in the last 16 rounds. No team in the European league wants to be matched with teams from the champions league.
This is the case if you only refer to the names of those teams, but why would the Europa League be more challenging when a very weak Juventus Turin is going to join it for the final round? I think it doesn't really matter whether the teams are called Barcelona or Juventus, what matters is how they are in shape, and in contrast to Juventus I would rather say that Barcelona is in good shape and has a big chance to win the Europa League IF they can motivate themselves to give their very best in a competition that isn't exactly what they were hoping for. Juventus is just not performing very well and they pretty consistently deliver not only bad results, but also bad games in general. I don't think they are the biggest favorite in the EL. They do of course have a chance to win it like some other teams, but they aren't my top favorite.