Nothing is impossible, just look like in the UCL, Dortmund were very lucky to reach the final and it was all because they had opponents they could beat even though Dortmund themselves were not strong team.
Something similar could happen to Manchester Uniter if they are lucky and only get opponents they feel they can beat, but opportunities like this are not easy to get, we see how things develop next season.
Manchester United played in the UCL last season and look how badly they performed. This season they will appear in the European league and I hope they can be a little better than the previous season. I think for now United is worthy to play in UEL. At least they got through the group phase and played in the quarterfinals or even the semifinals.
Dortmund are playing very well this season and I think they deserve to play in the final. Dortmund beat several strong teams such as AC Milan, PSV, Atletico Madrid and PSG to reach the final. Maybe they are not as strong as Munich or even City but Dortmund are playing extraordinary and could give a surprise tonight.
If Manchester United perform well in the league next season, I am confident they will perform well in the Europa League competition as well; however, if they do not improve in the Premier League, they will still be eliminated in the Europa League, because Manchester United must buy players if they want to do well next season, because without key players, Manchester United will not suffer again. I saw Erik Tag's growth to obtain the opportunity to defeat Manchester City in the FA Cup, and I am confident he will do well, but he needs to add some players because some of the players are weak now and are not doing as well as they once did. And if he can't acquire players the next season, and can't win matches am sure he will be definitely sack, because even now they have not say anything about him if he will continue next season or not.
I just saw that Real Madrid's match against Dortmund would be very difficult, and everyone gives Real Madrid hope in the match, and even check bet madrid has more chances to win the title, so let's see how the game ends tonight. And I'm with Real Madrid because I believe they'll respond and win the trophy. Ancelotti should try to win the Champions League and anticipate something to happen on the pitch. Everyone is prepared for the final.