I agree with you, finals are always difficult and unpredictable matches. Although Tottenham and Manchester utd are pretty bad in the league, in the Europa League they have given their best performances so far, so I think it will be a pretty balanced match.
As luck would have it for them they are already safe from relegation in the league, we could see something more epic
Both teams are no longer focused on the Premier League because they have ensured that they are not relegated so what is being done now is preparing for the Europa League final. Both coaches are very aware that achieving the title will save them from the slump because at least the fans can be satisfied with achieving one title. But this challenge is not easy because both teams come from the same League so overall for both coaches understand each other's weaknesses. I favor Manchester United as a candidate for the title but Tottenham also has a big chance because so far this season Manchester United has not been able to beat Tottenham in the Premier League.