Copenhagen had such a great season in Europe that they were called underdogs and made it to the last 16 of the Champions League, and with their unexpected success, Copenhagen will be one of the teams to watch in the next round.
And in the next match they have to meet the defending champion, namely Manchester City, and this will really be a very tough test for Copenhagen and whether Copenhagen will give another surprise or stop for the next round.
It's easy to know, if Copenhagen can enter the next round, it means the match is already fixed. If Copenhagen stop on the quarter final, it means the match is legitimate. And in the next match they have to meet the defending champion, namely Manchester City, and this will really be a very tough test for Copenhagen and whether Copenhagen will give another surprise or stop for the next round.
Since I believe there's no fixed match in Champions League since every teams want to get a trophy, you already know my answer.
The reason why Arsenal has fallen during Christmas was because they have been maintaining the same pattern of play for a long time which made them very predictable. Now the coach would have a different pattern to execute in the field but there are no subsequent players to use in playing them. Most of their players are on injuries. I could remember Timber, Partey, Tomiyasu, Viera and some other players were on injury quite some period. Although i heard rumours that most of them are back and are ready to play in the competitions.
Arsenal has fallen because Bukayo Saka and Odegaard can't contribute like they used to be, rest of the players can't score a goal.